
For individuals & families
Individual access
A private, personal route to understanding anxiety predisposition and current symptoms, with a personalised prevention pathway. No employer involvement needed.
Prevention · AnxApp
AnxApp gives individuals, families and organisations a practical way to recognise anxiety-related risk sooner, and to connect that insight with prevention or TRT™ recovery support.
The earlier risk is visible, the more choice there is about what to do next.

Why early action matters
Anxiety-related experiences can build quietly alongside poor sleep, fatigue, avoidance or difficulty concentrating. By the time they are obvious, they may already be shaping work, family life and confidence. Recognising risk sooner opens the door to support while there is room to act.
Confidential predisposition and current-symptom assessments bring anxiety-related risk into view earlier, rather than waiting for it to become the only thing you notice.
Results guide a personalised prevention or recovery pathway, so insight leads somewhere practical instead of ending with a score.
Science-led resources, Ask Chuck guidance and, where recovery is the goal, the Institute's TRT™ recovery programme.
Where to start

For individuals & families
A private, personal route to understanding anxiety predisposition and current symptoms, with a personalised prevention pathway. No employer involvement needed.

For organisations
Confidential support for every member, anonymised insight for leadership and practical training for managers, deployed across your organisation.
Inside workplace deployment
Each role gets what it needs, with a clear boundary between private member support and organisational insight.
Members see their own results and pathway. No individual answers or results are shared with management.
HR and leadership see anonymised patterns, department insight where privacy thresholds permit (minimum reporting group of 10) and prioritised recommendations.
An introduction plus a 12-part programme in Science, Recognition and Signposting for Mental Health Conditions, with conversation guides and escalation support.

Ask Chuck · Our knowledge, made accessible
Ask Chuck offers guidance on symptoms, thoughts, physical and mental health concerns, relationships and everyday challenges. It brings together our team’s research, data, TRT™ recovery material and coaching knowledge gathered through 32 years of practice, making that experience accessible through conversation.
Chuck is the interface, not the expert. The expertise belongs to our team and the material we have developed. His role is to make that knowledge easier to find, understand and use as part of your prevention or recovery pathway.
Explore Ask Chuck through AnxApp (opens in a new tab)Ask Chuck is not presented as an independent intelligence creating its own therapy or replacing our team. It provides a guided way into the Institute’s existing research, teaching and practical coaching. The knowledge comes from our work; Chuck makes it accessible through conversation.

When recovery is the next step
For anyone already living with anxiety, ANXAPP UK brings the Institute's Threat Recalibration Therapy™ recovery programme, professional support and practical tools together in a private Member Space.
Read the full AnxApp platform overview, or talk to the Institute about bringing prevention into your organisation.


"If you doubt this method works, check out further evidence in books such as 'rewire the brain' by John B Arden. It worked for me, and will for anyone if they…"
— Hayley S.


"Just a note to anyone thinking of buying this product — It does work! I had all the symptoms including chronic muscle pain, racing heart, horrid thoughts, OC…"
— Robert K.


"I just wanted to thank you personally, Charles, for your method! After only 5 weeks I have my life back. I never thought I'd feel OK again — I thought my lif…"
— Gill H.


"I owe my life to Charles Linden. He was like an angel that came into my life and made me believe that I can get rid of my anxiety. I love this man with all m…"
— Rey


"Just wanna say a quick thanks... You've made sense of it all now and I'm working with your pack every day. Worth every penny. The world's a better place with…"
— Richard S.


"I found the program during a time of suffering from acute anxiety and panic attacks. Not a single panic attack since, and that was 4 years ago. I know I'll n…"
— Julie G.


"God Bless you, for you already have changed my life over 5 years ago! I know your method works because I'm set free by it! You are a gift from God and I than…"
— Bill S.


"I found your website by chance and I can believe it — I've read only the first 12 pages and for me it's enough! You can believe or not, but the change was im…"
— Dr. Branko M., MD, MS — Serbia


"Charles Linden is doing things in the anxiety recovery field that no one else has even tried to do. For years I thought I was going mad, now I'm anxiety free…"
— Rob K.


"Recovery is real. It actually happens. I didn't believe it was possible. Then I did Linden Recovery & TRT™ Therapy. I am now anxiety free and have been for o…"
— Kezia B.


"Linden Recovery & TRT™ Therapy has made me more self-confident, less anxious, and a much more compassionate person. I have been doing it for a year now and h…"
— Isabelle R.


"You have a great gift from God in helping people my friend, keep up the good work! To all who may be curious or skeptical — it really does work! Stick with t…"
— Brad H.


"It's amazing how much more relaxed I feel. I'm actually looking forward to life's big changes rather than frightened! I'm so thankful I came across Linden Re…"
— Jennifer M.


"I had agoraphobia for 6 years and changed over 20 psychologists and psychiatrists but they couldn't help. After 6 years, I'm OUT again, feel so good, like no…"
— Danejla K.


"This method works! Don't bother with all the other therapies out there that promise to work and cost a fortune. Mr Linden, you rock! I wish I had found the m…"
— Lisa K.


"I bought the method about 18 months ago. Right now I feel free of anxiety and panic attacks. Thank you."
— Elizabeth P.


"I've been doing Linden Recovery & TRT™ Therapy for 2 weeks and oh my God — the difference! I was sat in the car today and had an attack and it just washed ov…"
— Caz P.


"Linden Recovery & TRT™ Therapy changed my life. I suffered for years with panic attacks and anxiety. Within weeks of starting the program I was a different p…"
— Mark T.


"I've tried CBT, medication, hypnotherapy — nothing worked until Linden Recovery & TRT™ Therapy. The science behind it finally made sense of what was happenin…"
— Sarah W.


"Charles Linden is a genius. Simple as that. He understood what was happening in my brain when no doctor or therapist could explain it. His method gave me my …"
— David H.


"I was housebound for three years with agoraphobia and severe anxiety. Linden Recovery & TRT™ Therapy got me out of the house, back to work, and living life a…"
— Angela M.


"My daughter was suffering terribly with anxiety at age 16. Within six weeks of Linden Recovery & TRT™ Therapy she was back at school, socialising, and laughi…"
— Louise B.


"I was sceptical — very sceptical. But after six months of conventional therapy going nowhere, I tried Linden Recovery & TRT™ Therapy. Three months later I ca…"
— James F.


"Linden Recovery & TRT™ Therapy is the only anxiety treatment that actually addresses the cause rather than the symptoms. Everything else I tried just masked …"
— Karen S.


"I've recommended Linden Recovery & TRT™ Therapy to everyone I know who struggles with anxiety. The results speak for themselves. Charles Linden has done some…"
— Michael O.


"After years of CBT and medication I thought I would never be free. Linden Recovery & TRT™ Therapy showed me how to actually switch off the anxiety at its sou…"
— Patricia G.


"I work as a nurse and see anxiety patients every day. I recommend Linden Recovery & TRT™ Therapy to every single one of them. The neurological explanation is…"
— Susan T., RN


"Charles — you saved my marriage. My anxiety was destroying everything. Linden Recovery & TRT™ Therapy turned everything around in a matter of weeks. My husba…"
— Claire R.


"I had panic disorder so severe I couldn't drive. After Linden Recovery & TRT™ Therapy I drove to Scotland from London — alone. That's the power of this program."
— Tony W.


"The simplicity of Linden Recovery & TRT™ Therapy is what makes it so powerful. No complicated techniques, no pills, no side effects. Just a clear, logical pa…"
— Fiona K.
"I cried when I read the testimonials on Linden Recovery & TRT™ Therapy website because I thought — finally, someone who understands. Charles Linden understan…"
— Rachel H.
"My anxiety had become so bad I'd stopped eating properly, stopped seeing friends, and barely left my room. Linden Recovery & TRT™ Therapy brought me back to …"
— Emily S.
"I've battled health anxiety for 20 years. Tried everything. Linden Recovery & TRT™ Therapy is the first and only thing that has actually resolved it. I genui…"
— Graham L.
"Intrusive thoughts had ruined my life for 15 years. Linden Recovery & TRT™ Therapy explained why they happen and, more importantly, how to stop them. I wish …"
— Nicola P.
"Social anxiety had left me isolated and unemployed. After Linden Recovery & TRT™ Therapy, I got a job, made friends, and started dating. My life has complete…"
— Dan K.
"My son was suffering with OCD and anxiety at age 12. The child-appropriate version of Linden Recovery & TRT™ Therapy was incredible. He's been symptom-free f…"
— Helen W.
"I flew long-haul for the first time in 11 years after completing Linden Recovery & TRT™ Therapy. I actually enjoyed the flight. I cannot describe how impossi…"
— Andrew B.
"The explanation of the fear response system and how anxiety perpetuates itself was the lightbulb moment I needed. Once I understood the mechanism, Linden Rec…"
— Dr. Jane M.
"Every penny spent on Linden Recovery & TRT™ Therapy was worth it. I've spent tens of thousands on therapy over 10 years with no lasting result. Linden Recove…"
— Peter C.
"I thought I was broken beyond repair. My anxiety was with me every waking moment for seven years. Linden Recovery & TRT™ Therapy proved me wrong — and I am d…"
— Tracey L.


"If you doubt this method works, check out further evidence in books such as 'rewire the brain' by John B Arden. It worked for me, and will for anyone if they…"
— Hayley S.


"Just a note to anyone thinking of buying this product — It does work! I had all the symptoms including chronic muscle pain, racing heart, horrid thoughts, OC…"
— Robert K.


"I just wanted to thank you personally, Charles, for your method! After only 5 weeks I have my life back. I never thought I'd feel OK again — I thought my lif…"
— Gill H.


"I owe my life to Charles Linden. He was like an angel that came into my life and made me believe that I can get rid of my anxiety. I love this man with all m…"
— Rey


"Just wanna say a quick thanks... You've made sense of it all now and I'm working with your pack every day. Worth every penny. The world's a better place with…"
— Richard S.


"I found the program during a time of suffering from acute anxiety and panic attacks. Not a single panic attack since, and that was 4 years ago. I know I'll n…"
— Julie G.


"God Bless you, for you already have changed my life over 5 years ago! I know your method works because I'm set free by it! You are a gift from God and I than…"
— Bill S.


"I found your website by chance and I can believe it — I've read only the first 12 pages and for me it's enough! You can believe or not, but the change was im…"
— Dr. Branko M., MD, MS — Serbia


"Charles Linden is doing things in the anxiety recovery field that no one else has even tried to do. For years I thought I was going mad, now I'm anxiety free…"
— Rob K.


"Recovery is real. It actually happens. I didn't believe it was possible. Then I did Linden Recovery & TRT™ Therapy. I am now anxiety free and have been for o…"
— Kezia B.


"Linden Recovery & TRT™ Therapy has made me more self-confident, less anxious, and a much more compassionate person. I have been doing it for a year now and h…"
— Isabelle R.


"You have a great gift from God in helping people my friend, keep up the good work! To all who may be curious or skeptical — it really does work! Stick with t…"
— Brad H.


"It's amazing how much more relaxed I feel. I'm actually looking forward to life's big changes rather than frightened! I'm so thankful I came across Linden Re…"
— Jennifer M.


"I had agoraphobia for 6 years and changed over 20 psychologists and psychiatrists but they couldn't help. After 6 years, I'm OUT again, feel so good, like no…"
— Danejla K.


"This method works! Don't bother with all the other therapies out there that promise to work and cost a fortune. Mr Linden, you rock! I wish I had found the m…"
— Lisa K.


"I bought the method about 18 months ago. Right now I feel free of anxiety and panic attacks. Thank you."
— Elizabeth P.


"I've been doing Linden Recovery & TRT™ Therapy for 2 weeks and oh my God — the difference! I was sat in the car today and had an attack and it just washed ov…"
— Caz P.


"Linden Recovery & TRT™ Therapy changed my life. I suffered for years with panic attacks and anxiety. Within weeks of starting the program I was a different p…"
— Mark T.


"I've tried CBT, medication, hypnotherapy — nothing worked until Linden Recovery & TRT™ Therapy. The science behind it finally made sense of what was happenin…"
— Sarah W.


"Charles Linden is a genius. Simple as that. He understood what was happening in my brain when no doctor or therapist could explain it. His method gave me my …"
— David H.


"I was housebound for three years with agoraphobia and severe anxiety. Linden Recovery & TRT™ Therapy got me out of the house, back to work, and living life a…"
— Angela M.


"My daughter was suffering terribly with anxiety at age 16. Within six weeks of Linden Recovery & TRT™ Therapy she was back at school, socialising, and laughi…"
— Louise B.


"I was sceptical — very sceptical. But after six months of conventional therapy going nowhere, I tried Linden Recovery & TRT™ Therapy. Three months later I ca…"
— James F.


"Linden Recovery & TRT™ Therapy is the only anxiety treatment that actually addresses the cause rather than the symptoms. Everything else I tried just masked …"
— Karen S.


"I've recommended Linden Recovery & TRT™ Therapy to everyone I know who struggles with anxiety. The results speak for themselves. Charles Linden has done some…"
— Michael O.


"After years of CBT and medication I thought I would never be free. Linden Recovery & TRT™ Therapy showed me how to actually switch off the anxiety at its sou…"
— Patricia G.


"I work as a nurse and see anxiety patients every day. I recommend Linden Recovery & TRT™ Therapy to every single one of them. The neurological explanation is…"
— Susan T., RN


"Charles — you saved my marriage. My anxiety was destroying everything. Linden Recovery & TRT™ Therapy turned everything around in a matter of weeks. My husba…"
— Claire R.


"I had panic disorder so severe I couldn't drive. After Linden Recovery & TRT™ Therapy I drove to Scotland from London — alone. That's the power of this program."
— Tony W.


"The simplicity of Linden Recovery & TRT™ Therapy is what makes it so powerful. No complicated techniques, no pills, no side effects. Just a clear, logical pa…"
— Fiona K.
"I cried when I read the testimonials on Linden Recovery & TRT™ Therapy website because I thought — finally, someone who understands. Charles Linden understan…"
— Rachel H.
"My anxiety had become so bad I'd stopped eating properly, stopped seeing friends, and barely left my room. Linden Recovery & TRT™ Therapy brought me back to …"
— Emily S.
"I've battled health anxiety for 20 years. Tried everything. Linden Recovery & TRT™ Therapy is the first and only thing that has actually resolved it. I genui…"
— Graham L.
"Intrusive thoughts had ruined my life for 15 years. Linden Recovery & TRT™ Therapy explained why they happen and, more importantly, how to stop them. I wish …"
— Nicola P.
"Social anxiety had left me isolated and unemployed. After Linden Recovery & TRT™ Therapy, I got a job, made friends, and started dating. My life has complete…"
— Dan K.
"My son was suffering with OCD and anxiety at age 12. The child-appropriate version of Linden Recovery & TRT™ Therapy was incredible. He's been symptom-free f…"
— Helen W.
"I flew long-haul for the first time in 11 years after completing Linden Recovery & TRT™ Therapy. I actually enjoyed the flight. I cannot describe how impossi…"
— Andrew B.
"The explanation of the fear response system and how anxiety perpetuates itself was the lightbulb moment I needed. Once I understood the mechanism, Linden Rec…"
— Dr. Jane M.
"Every penny spent on Linden Recovery & TRT™ Therapy was worth it. I've spent tens of thousands on therapy over 10 years with no lasting result. Linden Recove…"
— Peter C.
"I thought I was broken beyond repair. My anxiety was with me every waking moment for seven years. Linden Recovery & TRT™ Therapy proved me wrong — and I am d…"
— Tracey L.
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