How to Stop Overthinking: 8 Evidence-Based Ways to Calm Your Mind
How to Stop Overthinking: 8 Evidence-Based Ways to Calm Your Mind
If you’re wondering how to stop overthinking, you’re not alone. Many of us replay conversations, worry about things that have not happened yet or find ourselves thinking through the same problem again and again.
Thinking something through can be useful. But when your thoughts become repetitive without leading to a solution, they can leave you feeling stressed, anxious or mentally exhausted.
The answer is not necessarily to force yourself to stop thinking. Instead, techniques such as challenging unhelpful thoughts, mindfulness, scheduled “worry time”, movement and controlled breathing may help you respond differently when your mind gets stuck in a loop.
In this guide, we look at how to stop overthinking, why repetitive thoughts happen and eight evidence-based strategies that may help you calm an overactive mind.
Contents
What Is Overthinking?
Overthinking is an everyday term for becoming caught in repetitive thoughts that do not seem to lead to a useful conclusion or action.
Overthinking itself is not a medical diagnosis. In psychological research, similar patterns are often discussed in terms of worry and rumination.
Rumination generally involves repeatedly returning to thoughts, feelings or past experiences. Worry often focuses more heavily on things that might happen in the future.
Overthinking might look like:
- Replaying conversations in your head
- Thinking repeatedly about a mistake
- Imagining everything that could go wrong
- Second-guessing decisions you have already made
- Trying to predict what somebody else is thinking
- Finding it difficult to switch your thoughts off at bedtime
The important distinction is whether your thinking is actually helping you. Productive reflection can lead to a decision or action. Overthinking tends to keep circling around the same issue without moving you forwards.
Why Do I Overthink Everything?
There is unlikely to be one simple reason why someone overthinks.
Sometimes your brain is genuinely trying to solve a problem. If something feels uncertain or important, repeatedly thinking about it can feel like a way of gaining more control.
The problem is that not every uncertainty can be solved by thinking about it for longer.
Repetitive thinking can also become more noticeable during periods of stress and can occur alongside anxiety or low mood. If you are already feeling physically tense or stressed, the thoughts themselves may also feel harder to manage.
If stress is something you have been experiencing regularly, our guide to how to lower cortisol naturally explores practical, evidence-based ways to manage everyday stress.
You may also find our guide to how to reset your nervous system useful if you want to understand what happens in the body during periods of heightened stress.
How to Stop Overthinking: 8 Evidence-Based Strategies
Learning how to stop overthinking starts with recognising when useful reflection has turned into repetitive thinking.
There is no single technique that will instantly switch off every unwanted thought. Instead, the aim is to develop ways of responding that make it easier to step out of an unhelpful thinking cycle.
The following eight strategies draw on approaches used to manage worry, rumination, stress and unhelpful thought patterns.
1. Notice When You’re Overthinking
The first step is surprisingly simple: notice what your mind is doing.
When you are caught up in a thought, it can feel as though you are actively solving something. Taking a moment to recognise the pattern creates some distance from it.
Try asking yourself:
- Am I solving a problem or repeating it?
- Is there something I can actually do about this right now?
- Do I have any new information?
- Is thinking about this helping me feel clearer?
You do not need to criticise yourself for overthinking. Simply recognising that your thoughts have started looping can make it easier to choose what you do next.
2. Challenge Unhelpful Thoughts
One way to help stop overthinking is to question whether the thoughts going around your head are completely accurate.
This idea is commonly used in Cognitive Behavioural Therapy (CBT), which explores the relationship between thoughts, feelings and behaviour. The NHS self-help CBT guidance includes practical techniques for dealing with worries and unhelpful thoughts.
The NHS also recommends reframing unhelpful thoughts by stepping back, examining the evidence and considering other ways of looking at a situation.
For example, imagine your mind tells you:
“I completely messed that up.”
Before accepting the thought as fact, ask yourself:
- What evidence supports this thought?
- What evidence goes against it?
- Am I assuming I know what somebody else thinks?
- Am I automatically expecting the worst outcome?
- What would I say to a friend who had this thought?
Writing this down can also help. The NHS thought record exercise provides a structured way to capture a thought, examine the evidence around it and consider a different perspective.
The goal is not forced positivity. It is to develop a more balanced way of looking at the situation rather than automatically accepting every negative thought as fact.
3. Give Yourself Worry Time
Trying to tell yourself “stop thinking about it” is rarely very helpful.
A different approach is to deliberately give your worries somewhere to go.
The NHS recommends a technique known as “worry time”. This involves setting aside a short period specifically for thinking about your worries rather than allowing them to take over the whole day.
Try this:
- Choose a 10–15 minute period.
- Write down worries that appear during the day.
- Remind yourself that you will return to them later.
- During your worry time, look through what you have written.
- Separate problems you can act on from things outside your control.
The NHS problem-solving guidance also recommends distinguishing between problems with practical solutions and hypothetical worries about things that are outside your control.
You may even find that some thoughts no longer feel as urgent when you return to them later.
4. Practise Mindfulness
Mindfulness is not about completely clearing your mind. It involves noticing thoughts, feelings and sensations without automatically becoming absorbed in them.
This makes mindfulness particularly relevant when looking at how to stop overthinking and rumination.
A 2025 systematic review and meta-analysis examined 29 randomised controlled trials involving 2,535 participants and found mindfulness-based cognitive therapy was associated with reductions in rumination.
A separate meta-analysis of 61 studies involving 4,229 participants also found that mindfulness-based interventions improved ruminative thinking.
You do not necessarily need a long meditation session to practise mindfulness.
Spend a few minutes deliberately noticing:
- What you can see
- What you can hear
- How your body feels
- The sensation of your breathing
When your mind wanders back to whatever you were overthinking, notice that it has happened and gently bring your attention back to the present.
5. Focus on What You Can Control
Overthinking often becomes particularly frustrating when the thing you are thinking about cannot immediately be solved.
Ask yourself one question:
“Is there something practical I can do about this?”
If the answer is yes, turn the thought into a small action. That might mean sending an email, booking an appointment, having a conversation, researching something you need to know or writing down what you need to do tomorrow.
If the answer is no, continuing to mentally rehearse the situation may not give you any more control over it.
The NHS problem-solving approach recommends identifying whether a problem can be acted on, considering possible solutions and creating a specific plan where action is possible.
6. Move Your Body
When your mind feels stuck, changing what your body is doing can provide a useful change of focus.
That does not mean you need an intense workout. Depending on your health and mobility, movement could include:
- Going for a walk
- Gentle stretching
- Gardening
- Cycling
- Swimming
- A short home workout
Physical activity can support mental wellbeing and also gives your attention something concrete to return to when your thoughts feel repetitive.
You do not need to exercise specifically to “stop” a thought. Think of movement as another way to interrupt the cycle and shift your attention towards the present.
7. Slow Down Your Breathing
Overthinking can feel much harder to manage when you are already stressed or physically tense.
Slow, controlled breathing is one simple technique that may help reduce feelings of stress and anxiety.
A systematic review of breathing exercise interventions in adults examined 19 studies. Twelve reported significant improvements in anxiety and nine reported significant improvements in stress.
The researchers also highlighted the need for more large randomised controlled trials, so breathing exercises should not be presented as a cure for anxiety or repetitive thinking.
Instead, try breathing gently and comfortably while allowing your breathing to become slower. Focus your attention on the sensation of each breath.
Think of breathing exercises as a way of creating a calmer starting point from which to respond to your thoughts rather than a way to magically switch them off.
8. Protect Your Sleep
There is a frustrating relationship between an active mind and sleep.
You may feel exhausted all evening, only for your brain to suddenly start reviewing the entire day as soon as your head hits the pillow.
If this sounds familiar, create a clearer transition between daytime and bedtime.
Helpful habits can include:
- Keeping a relatively consistent sleep and waking routine
- Giving yourself time to wind down before bed
- Writing down tomorrow’s tasks before getting into bed
- Dealing with practical worries earlier in the evening
- Keeping your bedroom quiet, dark and comfortable
The NHS guidance on sleeping better suggests writing worries down and making a to-do list before bed if you regularly lie awake thinking about the next day.
If sleep is something you regularly struggle with, you can also read our guide to medical cannabis and sleep.
The idea is simple: give tomorrow’s problems somewhere to live other than inside your head while you are trying to sleep.
How to Stop Overthinking at Night
If you want to know how to stop overthinking at night, try moving your problem-solving out of the bedroom and into an earlier part of your evening.
Keep a notebook nearby and write down anything you feel you need to remember. Turning a vague mental loop into something concrete can make it easier to leave until tomorrow.
You could also schedule your “worry time” earlier in the evening rather than immediately before going to bed.
If repetitive thoughts appear once you are in bed, acknowledge them without trying to solve everything immediately.
A useful reminder can simply be: “I don’t need to solve this tonight.”
When Should You Get Help With Overthinking?
Occasional overthinking is common. However, persistent worry or rumination can sometimes occur alongside mental health conditions.
Consider speaking to a healthcare professional if repetitive thoughts are:
- Regularly interfering with your sleep
- Making it difficult to work or carry out everyday activities
- Causing significant distress
- Accompanied by persistent anxiety or low mood
- Becoming increasingly difficult to manage yourself
The most appropriate support will depend on what is causing your symptoms and how they are affecting your everyday life.
Overthinking FAQs
How Do I Stop Overthinking Everything?
If you want to know how to stop overthinking, start by recognising when useful problem-solving has turned into repetitive thinking. Challenging unhelpful thoughts, writing worries down, scheduling “worry time”, practising mindfulness and turning solvable worries into practical actions can all help you respond differently.
Why Do I Overthink Everything?
There is no single cause of overthinking. Repetitive thinking may become more noticeable during periods of uncertainty or stress and can also occur alongside anxiety or low mood. Sometimes the brain keeps revisiting a problem because it is trying to create certainty even when no immediate solution is available.
Is Overthinking the Same as Anxiety?
No. Overthinking is an informal description rather than a medical diagnosis. However, excessive worry and repetitive thinking can occur alongside anxiety disorders. If worrying is persistent, difficult to control or affecting everyday life, consider speaking to a healthcare professional.
How Do I Stop Overthinking at Night?
To help stop overthinking at night, try writing down unfinished tasks or worries before bed and setting aside time earlier in the evening to think about them. A consistent wind-down routine and redirecting your attention away from problem-solving in bed may also help your mind settle.
Can Mindfulness Help With Overthinking?
Research suggests mindfulness-based interventions can reduce rumination. Mindfulness does not require you to stop thoughts appearing. Instead, it involves noticing thoughts without automatically following or reacting to each one.
Does Writing Things Down Help With Overthinking?
Writing a worry or task down can help you separate something that requires action from a repetitive thought. The NHS includes writing worries down within its practical guidance for managing worries and problem-solving.
How Can I Calm an Overactive Mind Quickly?
There is no guaranteed way to instantly switch off an active mind. However, slowing your breathing, changing your environment, moving your body, grounding your attention in your surroundings or writing down what you are thinking about may help interrupt repetitive thinking.
Why Does My Brain Overthink at Night?
Night-time removes many of the distractions that occupy your attention during the day, which can make worries and unfinished thoughts feel more noticeable. Creating a wind-down routine and dealing with practical worries before getting into bed may help.
Can Overthinking Affect Sleep?
Persistent worry and repetitive thoughts can make it difficult to relax before sleep. The NHS recommends techniques such as writing worries down, making a next-day to-do list and reframing unhelpful thoughts for people who find themselves lying awake worrying.
Can Breathing Exercises Help With Overthinking?
Breathing exercises do not directly switch off repetitive thoughts, but evidence suggests controlled breathing exercises may help reduce anxiety and stress in adults. Feeling calmer may make it easier to step away from a repetitive thought cycle.
What Is the Difference Between Overthinking and Problem-Solving?
Problem-solving moves you towards a decision, solution or practical action. Overthinking tends to repeat the same thoughts without producing new information or a useful next step. Asking “Is there something I can actually do about this?” can help you distinguish between the two.
The Bottom Line
Learning how to stop overthinking is less about forcing thoughts away and more about changing how you respond to them.
Start by noticing when productive thinking has turned into a loop. Ask whether there is a practical action you can take. If there is, make a plan.
If there is not, strategies such as challenging unhelpful thoughts, scheduled worry time, mindfulness, movement and controlled breathing may help redirect your attention.
Having an occasionally busy mind is a normal part of life. The aim is not to never worry or think deeply again.
It is to become better at recognising when thinking is helping you — and when it is time to direct your attention somewhere else.
When Stress or Anxiety Becomes More Than an Occasional Worry
Persistent anxiety can affect sleep, relationships, work and everyday life. If anxiety or another diagnosed health condition is significantly affecting you, speaking with a healthcare professional can help you understand the treatment options available.
CB1 Medical provides specialist consultations for eligible adults considering medical cannabis after conventional treatment options have not provided sufficient relief. Medical cannabis is not appropriate for everyone and treatment decisions are made individually by specialist clinicians.
If you are considering medical cannabis treatment, you can check your eligibility online to see whether you may be suitable for a consultation.
