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Why Anxiety Makes Intrusive Thoughts Worse

Why do I have Anxiety?

When you’re anxious, your brain is constantly scanning for potential dangers. It’s in a heightened state of alertness, looking for anything that could be a threat. This is why anxiety disorders—such as Generalised Anxiety Disorder (GAD) and Obsessive-Compulsive Disorder (OCD)—are often associated with intrusive thoughts.

Here’s why anxiety and intrusive thoughts go hand in hand:

  1. Your Brain Is Hypervigilant
    Anxiety puts your nervous system in a state of fight-or-flight. This increases sensitivity to perceived dangers—including thoughts. An anxious brain doesn’t just have thoughts; it analyzes them, fixates on them, and treats them like threats.
  2. The More You Try to Stop a Thought, the Stronger It Gets
    Ever heard the phrase, “Don’t think of a pink elephant”? What happens? You think of a pink elephant. This is called Ironic Process Theory—when you try to suppress a thought, it often rebounds even stronger (Harvard Health).
  3. Thought-Action Fusion: You Mistake Thoughts for Reality
    People with anxiety often believe that thinking something means they might act on it, or that it reflects their true character. This is called thought-action fusion, and it can make intrusive thoughts feel deeply distressing (PubMed).
  4. The Brain’s Negative Bias
    Anxiety tricks the brain into prioritizing negative, fear-based thinking. This means intrusive thoughts feel more important than neutral or positive ones, making them harder to ignore.

How to Manage Intrusive Thoughts

The good news? Just because a thought appears doesn’t mean you have to believe it, act on it, or fear it. Here are some strategies to reduce the power of intrusive thoughts:

1. Recognise That Intrusive Thoughts Are Normal

Instead of asking, “Why am I having this thought?” try asking, “Why am I judging this thought?” Recognising that everyone has strange, unwanted thoughts can take away their power.

2. Practice Mindfulness and Detachment

Mindfulness teaches you to observe thoughts without reacting emotionally. When an intrusive thought appears, try telling yourself:

  • “That’s just a thought.”
  • “My brain is overreacting.”
  • “I don’t need to engage with this.”

This reduces the emotional weight attached to the thought.

3. Stop Trying to Push the Thoughts Away

Paradoxically, accepting intrusive thoughts instead of resisting them makes them weaker. Instead of fighting the thought, acknowledge it:

  • “Oh, there’s that weird thought again.”
  • “This is just noise from my anxious brain.”

By not treating it like a problem, it often fades faster.

4. Challenge Thought-Action Fusion

Just because you think something doesn’t mean it’s meaningful. If you have a thought about harming someone, it doesn’t mean you want to do it. Remind yourself:

  • “Thoughts don’t define who I am.”
  • “Having a thought doesn’t mean I will act on it.”

5. Reduce Anxiety Levels

Since anxiety fuels intrusive thoughts, addressing anxiety itself can reduce their intensity. Try:

  • Regular exercise (which reduces stress hormones).
  • Deep breathing techniques.
  • Therapy .
  • Reducing stimulants like caffeine.

When to Seek Professional Help

If intrusive thoughts are interfering with daily life, therapy can be incredibly beneficial. Anxiety therapy helps you reframe your relationship with intrusive thoughts, and in some cases, medication like SSRIs can help regulate anxiety levels.

Signs that professional support may be helpful:
✔️ Intrusive thoughts cause significant distress.
✔️ You engage in compulsive behaviors to “neutralise” thoughts.
✔️ You avoid situations due to fear of thoughts becoming reality.

You’re not broken, and you’re certainly not alone. The key is learning that thoughts don’t define you—they are just mental noise that passes through the mind like clouds in the sky.

Final Thoughts

Anxiety makes intrusive thoughts feel bigger, scarier, and more important than they actually are. But they’re just that—thoughts. They don’t mean anything about you, and they don’t have to control your life.

By understanding how anxiety fuels intrusive thoughts, changing how you react to them, and reducing overall stress levels, you can take back control. You are not your thoughts. You are the observer of them.

If you’re struggling with intrusive thoughts and anxiety, therapy can help. You don’t have to figure this out alone. Reach out today and take the first step toward freedom from overthinking.

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Ian Young

Ian Young

Training & Development

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Ian is an experienced therapist whose work spans trauma, addiction, anxiety and recovery. His approach is shaped as much by lived experience as by professional training and that combination makes him exceptionally relatable to the people he works with.

People who’ve worked with Ian consistently say the same thing — he gets it in a way that goes beyond what most trainers can offer. He doesn’t just understand the subject. He understands people.

Within Piece of Mind Training, Ian also plays a key role in business and strategic development, bringing a practical, grounded perspective to how the organisation grows and evolves.

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David Gowans

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David’s background is probably unlike anyone else you’ll meet in a mental health training room.

Twenty-three years on the frontline of emergency services first as a police officer, now as an HCPC-registered practising paramedic. He hasn’t studied stress, trauma and burnout from a distance. He’s carried them, in uniform, responding to people at the absolute worst moments of their lives. He understands the culture that makes asking for help feel like the hardest thing in the world because he’s lived inside that culture.

That frontline experience sits alongside his clinical practice as a qualified hypnotherapist and accredited EFT practitioner. David works with real people navigating real challenges every single week. What he brings to Piece of Mind Training isn’t theoretical. It’s current, grounded and built entirely from the inside out.

As part of the team, David delivers training, practises as a therapist and plays a key role in the development and direction of the organisation making sure that everything Piece of Mind produces is professionally rigorous and genuinely human.

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Iona Russell

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Iona has spent more than twenty years working at the intersection of human potential and real-world impact — across psychology, coaching, education, broadcasting, the charitable sector and social policy, in both the UK and the USA.

She is a Master Positive Psychology Coach and twice bestselling author who has supported hundreds of people through coaching qualifications and worked alongside some of the most respected names in positive psychology and personal development. As a keynote speaker and leadership advisor, she helps organisations rethink what success and human flourishing actually look like.

But what drives Iona’s commitment to mental health work goes deeper than her professional background. She lost her brother to suicide. That experience — and everything it taught her about the gap between what people are going through and the support available to them — shapes everything she brings to Piece of Mind Training.

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Ann Stewart

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Ann has spent her career helping people make sense of the things that are weighing on them and finding a way forward when everything feels tough.

Her background is genuinely rare. A qualified teacher, certified hypnotherapist, coach and First Aid for Mental Health practitioner, Ann brings together an understanding of how people learn with a deep, practical knowledge of how people struggle. She still works directly with adults and young people every week supporting those experiencing anxiety, low confidence, emotional distress and the kind of quiet difficulties that don’t always have a name but make everyday life feel impossibly hard.

As a trainer, Ann knows that the best mental health training doesn’t just inform people, it changes how they see themselves and the people around them. She brings that belief into every session she delivers, whether she’s working with a room full of HR professionals or a team who’ve never talked about mental health at work before.

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Andy Griffiths

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Clinical Hypnotherapy

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Andy is a practising therapist, clinical hypnotherapist and the founder of Piece of Mind Training. He’s spent over a decade working with clients across anxiety, trauma, panic disorder and complex mental health presentations not as a theorist, but as someone who has experienced many of these challenges himself.

His personal journey through mental health struggles, panic disorder and years of pretending everything was fine is the reason Piece of Mind Training exists. He built what he wished had existed when he needed it most.

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