Overthinking & Racing Thoughts

Overthinking is a very common experience in ADHD. If you find yourself overthinking everything, know you’re not alone.

ADHD brains often process information quickly, non-linearly, and with high mental activity, which can make it difficult to “switch off” your thoughts. Your mind may jump between ideas, replay conversations, or analyse situations in detail—especially when something feels important or uncertain.

Overthinking is often your brain’s way of trying to solve problems, avoid mistakes, or gain certainty, but it can quickly become exhausting and an unhelpful process.

ADHD therapy helps you slow down these thinking patterns, reduce mental overload, and feel more in control of your thoughts, rather than stuck in them.

A constantly racing mind is common in ADHD, where thoughts can feel fast, busy and hard to switch off. This often happens most when your brain is overstimulated, overwhelmed, or trying to solve multiple things at once.

Slowing racing thoughts usually involves a combination of emotional regulation skills and practical strategies to interrupt thinking loops.

In ADHD therapy, you’ll learn how to:

• Recognise when your thoughts are speeding up

• Interrupt repetitive or unhelpful thinking patterns

• Reduce mental overload and overwhelm

• Create more structure and clarity in your thinking

Over time, this helps your mind feel calmer, clearer, and more manageable, rather than constantly “on.”

ADHD therapy focuses on both the thought patterns and the emotional drivers behind overthinking.

Together, we can:

• Identify triggers for overthinking and mental loops

• Learn how to interrupt repetitive thought patterns

• Reduce anxiety that fuels overthinking

• Build emotional regulation and grounding skills

• Develop more flexible, balanced ways of thinking

Over time, this helps you feel more present, mentally clear, and less overwhelmed, so your thoughts feel manageable rather than constant or exhausting.

Many people with ADHD find that their mind becomes more active at night. When the day slows down, your brain may start processing everything at once, replaying conversations, worrying about the future, or trying to organise unfinished thoughts.

This can make it difficult to relax, fall asleep, or feel mentally settled.

ADHD therapy helps you:

• Reduce overthinking patterns that show up at night

• Develop strategies to “wind down” your brain

• Manage anxiety that keeps your mind active

• Create healthier mental and sleep routines

This can lead to better sleep, less night-time anxiety, and a greater sense of calm.

Racing thoughts are fast, repetitive, and often intrusive thought patterns that can feel hard to control. Your mind may jump rapidly between topics, focus on worries, or feel like it’s constantly “on.”

This can be especially noticeable:

• When you’re trying to relax or sleep

• During periods of stress or overwhelm

• When you’re making decisions or processing emotions

ADHD therapy helps you develop practical tools to calm your mind, organise your thoughts, and create more mental clarity, so your thoughts feel calmer and less overwhelming.

Replaying situations like conversations or decisions, is a common form of overthinking in ADHD. Your brain may be trying to make sense of what happened, avoid mistakes, or gain reassurance, but instead it keeps you stuck in a loop.

This can lead to:

• Increased anxiety

• Self-doubt

• Difficulty moving on

Practising doing the following can help break the cycle:

• Recognise when you’re stuck in a mental replay

• Challenge unhelpful thoughts or assumptions

• Let go of the need to “figure everything out”

• Shift your focus back to the present

Therapy can help put these skills into practice so over time, this helps you feel more mentally free, less stuck in the past, and more confident in yourself.

Overthinking can be part of both ADHD and anxiety—and they often overlap.

• ADHD can lead to fast, non-linear thinking and difficulty switching off

• Anxiety fuels repetitive “what if” thoughts and worry about outcomes

Together, they can create an unhelpful cycle of racing thoughts, mental loops and difficulty making decisions or relaxing.

Therapy helps you understand how these patterns show up for you and teaches you how to:

• Break the cycle of overthinking

• Reduce anxiety-driven thoughts

• Build more balanced and realistic thinking patterns

Overthinking can significantly increase anxiety, stress, and difficulty relaxing, particularly at night when there are fewer distractions. Your mind may replay the day, worry about the future, or try to “figure everything out,” making it hard to fall asleep.

Over time, this can lead to:

• Poor sleep quality

• Difficulty falling asleep

• Waking up through the night thinking

• Mental fatigue

• Increased stress and anxiety the next day

Therapy helps you break these thinking loops, regulate your nervous system, and develop strategies to wind down, so your mind can rest more easily.

Common signs of overthinking and racing thoughts include:

• Replaying conversations or interactions repeatedly in your mind

• Analysing decisions long after they’ve been made

• Worrying about future outcomes or “what if” scenarios

• Difficulty switching off or relaxing mentally

• Feeling mentally overwhelmed or stuck in your thoughts

These patterns can feel automatic, even when you know they’re not helpful.

Overthinking can come online particularly at night when there are fewer distractions.

Overthinking is often your brain’s way of trying to solve problems, avoid mistakes, or gain certainty. So if you live a particularly busy life, or you suppress, avoid or distract yourself from thoughts throughout the day - your brain is more likely to overthink at night when things are quieter, because it hasn’t had time to process the thoughts during the day

This means people often experience surges of thoughts, replaying the day or interactions and worrying about the future once they have lay down to sleep at night.

This can be incredibly frustrating and demoralising, but the good news is it can be manageable with appropriate tools.