Insights into the Mind

This post contains affiliate links. As an Amazon Associate I earn from qualifying purchases at no extra cost to you.

For years I thought anxiety meant panic attacks and being unable to function. I thought it looked like someone frozen in a supermarket aisle, or cancelling everything and staying in bed. It took me a long time — and a lot of reading — to understand that high functioning anxiety signs can look nothing like that. They can look like a full diary, a spotless flat, a promotion at work, and a permanent smile. On the outside, everything seems fine. On the inside, something is running at full speed and never, ever stopping.

What Actually Is High-Functioning Anxiety?

Here is something important to say upfront: high-functioning anxiety is not a clinical diagnosis. You won’t find it in the DSM-5 or the ICD-11. It is a term used informally — by therapists, writers, and people with lived experience — to describe someone who meets many of the hallmarks of an anxiety disorder but continues to appear outwardly capable and successful. Psychologists often describe this as anxiety that drives achievement rather than obvious avoidance.

That does not mean it is less real or less serious. Research consistently shows that untreated anxiety takes a significant toll on physical health, relationships, and long-term wellbeing, regardless of how well someone appears to be managing on the surface. A 2018 review published in JAMA Psychiatry found that anxiety disorders are among the most prevalent mental health conditions globally, and that many people go undiagnosed — partly because they seem to be coping so well.

From my own experience, the “functioning” part was actually part of the problem. Because I was still going to work, still seeing friends, still hitting my deadlines, nobody — including me — thought anything was wrong. Until it really, really was.

High-Functioning Anxiety Signs You Might Be Missing

This is the part I wish someone had handed me at 24, when I was exhausted but couldn’t explain why. These signs are sneaky precisely because many of them look like positive traits from the outside.

• Relentless overachieving. You always go above and beyond, but not because you love the work — because falling short feels catastrophic. The drive comes from fear, not passion.
• Chronic overthinking and replaying. You spend hours going over conversations you had days ago, rehearsing what you should have said, or catastrophising about things that haven’t happened yet.
• Difficulty saying no. You agree to things you don’t want to do because disappointing people feels unbearable. Your calendar is full; your energy is empty.
• Physical symptoms with no obvious cause. Tension headaches, jaw clenching, a tight chest, stomach issues. Your body is holding what your mind is trying to push through.
• Being unable to truly rest. Even on holiday, even at weekends, there is a low hum of unease. You feel guilty relaxing, or you physically cannot switch off.
• Needing constant reassurance. You ask colleagues if they are annoyed with you. You re-read sent emails three times. You seek confirmation that everything is okay — repeatedly.
• Procrastination through perfectionism. This one surprised me. Anxiety does not always look like doing too much. Sometimes it looks like being unable to start because you are terrified of doing it wrong.
• A private internal world that nobody sees. Outwardly cheerful, inwardly exhausted. You have become very good at performing “fine.”

I remember sitting in a café with a friend about a year before I finally sought help. She said, “You always seem so calm and sorted.” I laughed. Inside, I was running through a mental checklist of everything I might have forgotten, wondering if she was secretly annoyed with me, and calculating how much work I still had to do before bed. Sorted was the last thing I felt.

Why It Goes Unnoticed — and Why That Matters

High-functioning anxiety is so easy to miss because our culture rewards a lot of its symptoms. Being driven, organised, and always available are not red flags — they are praised. This means people with high-functioning anxiety often receive positive reinforcement for the very behaviours that are quietly burning them out. Therapists often describe this as a cycle where anxiety produces productivity, productivity produces praise, and that praise teaches the brain that the anxiety is useful — which makes it harder to challenge.

There is also an internal barrier. If you are achieving things, it is very easy to dismiss your own struggle. I spent two years telling myself I had nothing to complain about. I had a job, a flat, good friends. What did I have to be anxious about? This kind of thinking is incredibly common and incredibly unhelpful. Anxiety is not rational, and it does not require a “good enough reason” to be valid.

If any of the signs above resonated with you, please take that seriously. You do not need to be falling apart to deserve support. Talking to a therapist or counsellor — even briefly — can be genuinely life-changing. In the UK, you can self-refer to NHS Talking Therapies (formerly IAPT) for free CBT and counselling, and organisations like the BACP directory can help you find a private therapist if that suits you better.

What Helps: Practical Tools for Managing High-Functioning Anxiety

I want to be clear: I am not a therapist, and what I share here is based on my own experience and research, not clinical advice. But there are evidence-based approaches that have genuinely helped me, and resources that I return to regularly.

CBT Workbooks

Cognitive Behavioural Therapy is one of the most well-researched treatments for anxiety disorders. You don’t need to wait for a therapist’s appointment to start learning its principles. I’ve found workbooks genuinely useful as a supplement to therapy (not a replacement). Retrain Your Brain: Cognitive Behavioral Therapy in 7 Weeks is one I recommend regularly — it’s structured, accessible, and doesn’t require any prior knowledge. If you want something a little broader, The CBT Workbook for Mental Health covers anxiety alongside mood and wellbeing more generally. And if ADHD is also part of your picture — because anxiety and ADHD overlap enormously — The Complete CBT Workbook for Adults with ADHD is worth a look.

Journalling

Something I’ve noticed is that getting thoughts out of my head and onto paper genuinely reduces their power over me. Research in Behaviour Research and Therapy supports expressive writing as a tool for emotional regulation. The LIFTINSPIRE CO. FINDING BALANCE Mental Health Journal is a lovely option if you want guided prompts to structure your reflections, or you can keep it simple with a mindfulness-focused lined notebook for daily free-writing.

Mindfulness Cards and Micro-Practices

If sitting down for a full meditation feels impossible (very relatable when you are always in motion), bite-sized tools help. The Allura & Arcia 52 Stress Less & Self Care Cards are brilliant for this — you can pull one card and try a five-minute practice without any commitment to a full routine.

Magnesium Supplementation

This is not a cure, and please do speak to your GP before adding supplements — but there is growing research suggesting that magnesium glycinate may support the nervous system and help with stress and sleep. I take it myself. Pure Encapsulations Magnesium Glycinate is a high-quality option, or if you prefer something more budget-friendly, this chelated Magnesium Glycinate 500mg supplement is vegan and well-reviewed.

You Don’t Have to Be Falling Apart to Deserve Help

If you have read this far and recognised yourself in the high-functioning anxiety signs listed above, I want you to hear this: your experience is valid, even if you have a full social calendar and good performance reviews. Functioning is not the same as flourishing. Looking fine is not the same as being fine.

I spent years treating my anxiety as a productivity tool and calling it personality. It was not sustainable, and it was not living. The shift started when I finally stopped gatekeeping support from myself because I didn’t look “sick enough.” Please don’t make the same mistake I made.

If something here has resonated, consider reaching out to a GP, exploring NHS Talking Therapies, or using one of the resources above as a starting point. You deserve support that goes beyond getting through the day.

Take care of yourself — genuinely, not just on the surface.

With warmth,
Lucy x

I am not a licensed therapist or psychologist. This post is written from personal experience and research and is not a substitute for professional mental health advice. If you are struggling, please reach out to a qualified professional.