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Anxiety & CBT

The Link Between Anxiety and Overthinking

13 min read·Published 1 October 2026
Blank open notebook and pen beside a cup of tea on linen

It is 2am, and your mind is replaying a conversation from earlier in the week. You know the loop is not helping, but you cannot make it stop. If you are searching for how to stop overthinking, this article explains how overthinking and anxiety feed each other, which skills may help, and when it is worth talking to a professional.

What overthinking is, and what it isn’t

Overthinking is repetitive thinking about a situation that goes on longer than it is useful. It is not a medical diagnosis, and it is very common.

Psychologists often split it into two parts. Rumination is going over the past, such as a mistake or an awkward conversation. Worry is going over the future, with a stream of “what ifs”.

Some thinking is helpful, because it can lead to a plan, a decision or a lesson. The difference is where it ends up. If it heads toward the next step, it is doing its job. If it just loops, it has stopped being useful.

Type of thinking
Focus
How it feels
Does it help?
When to seek support
Problem-solving
One issue, usually with a next step
Purposeful, then finished
Yes, it ends in a plan or decision
Not usually needed
Worry
Future “what ifs”
Tense and restless
Sometimes, if it leads to planning
If it runs on most days
Rumination
Past events and mistakes
Heavy, stuck, self-critical
Rarely, unless it leads to a lesson
If it lingers and lowers your mood
Diagnosable anxiety (such as GAD)
Many topics at once
Constant and hard to control
It often affects sleep, work and relationships
Worry on most days for six months or more

Learning how to stop overthinking starts with spotting which of these you are doing.

Is overthinking a sign of anxiety?

Often, but not always. Overthinking is common in anxiety, and plenty of people overthink during stress, grief or big life changes without having an anxiety disorder.

Anxiety is common in Australia. The ABS National Study of Mental Health and Wellbeing found that 17.2 per cent of Australians aged 16 to 85 had an anxiety disorder in the previous 12 months (Source: ABS, 2020-22). Among people aged 16 to 24, 38.8 per cent had experienced any mental disorder in that time (Source: ABS, 2020-22).

Anxiety and overthinking are not the same thing, though. Anxiety disorders include generalised anxiety disorder (GAD), panic disorder and social anxiety disorder.

GAD involves excessive worry on more days than not for at least six months, and it affects about 5 per cent of the population (Source: Better Health Channel, Victorian Government). The Better Health Channel’s guide to generalised anxiety disorder covers the symptoms in more detail.

Only a GP, psychologist or psychiatrist can assess whether you have an anxiety disorder. This article cannot do that for you.

Why anxiety and overthinking feed each other

Illustrated four-step loop showing how anxiety and overthinking feed each other

Anxiety pushes your mind to search for certainty, and overthinking rarely finds it. The two often build on each other in a loop:

  1. Something triggers a worry, such as an unanswered message or a big decision.
  2. Your mind starts analysing, hoping to feel certain or prepared.
  3. The analysis brings more “what ifs”, not answers.
  4. Anxiety rises, and so does the urge to think it through again.

How anxiety drives overthinking

When you feel anxious, your mind looks for danger. Overthinking can feel like a way to stay ready. Many people also find uncertainty hard to sit with, so they replay events, rehearse conversations or ask others for reassurance. Perfectionism can add fuel.

How overthinking keeps anxiety going

The relief from thinking it through rarely lasts. Each round of dwelling can make a worry feel bigger and more urgent. Avoiding tasks or seeking reassurance may bring short-term relief, but it can stop you from learning that you can cope with uncertainty. Sleep that overthinking disrupts can then make everything feel harder.

How to stop overthinking: practical strategies to try

You cannot force your mind to go blank, but you can change how you respond to the loop. The five ideas below are naming the loop, setting a worry window, grounding, taking one small step and looking after sleep. They draw on CBT and mindfulness-based approaches. They may help some people, but results vary and individual circumstances differ.

Name the loop

When you notice yourself spiralling, tell yourself, “I’m overthinking again.” Then note what it is about. Spotting the pattern early makes it easier to step back. A short note on your phone can show you your triggers over time.

Set aside a worry window

Choose about 10 minutes each day to think through your worries on purpose. When a worry pops up at other times, jot it on a “parking list” and tell yourself it has its time later. Postponing worry is a technique used in CBT-based approaches.

Ground yourself in the present

Sunlight filtering through eucalyptus leaves in quiet Australian bushland

Try the 3-3-3 exercise. Name three things you can see, listen for three sounds, and touch or move three things around you. It can give your attention somewhere to go. It is a coping skill, not a treatment.

Turn thinking into one small next step

Ask yourself, “Can I do something about this today?” If yes, pick one small action, such as sending the email or making the call. If not, remind yourself that some things are out of your hands.

Look after sleep, caffeine, alcohol and movement

A tired mind tends to loop more. Caffeine and alcohol can affect both anxiety and sleep, so it can help to ease off, especially in the evening. A short walk can help too.

If these ideas do not help, or things are getting worse, please speak with a registered health practitioner.

What therapy can offer for overthinking and anxiety

A registered psychologist can help you understand why the loop keeps going and practise skills to change it. Cognitive behavioural therapy (CBT) and acceptance and commitment therapy (ACT) are commonly used approaches.

The RANZCP clinical practice guidelines list CBT as a first-line treatment for anxiety disorders (Source: RANZCP guideline 2018). Healthdirect also lists CBT, narrative therapy and ACT among the psychological therapies for GAD (Source: Healthdirect). Some people also talk with a GP or psychiatrist about medicine options. Psychologists do not prescribe medicines.

Online programs are another option. MindSpot is a free, government-funded service for Australians with worry, stress or low mood.

At Sage Psychological Services, therapy starts with a conversation about confidentiality and moves at a pace that feels right for you. You see the same psychologist each time. You can read about Jacob’s approach to therapy or see the anxiety therapy at Sage.

Reading about how to stop overthinking is a fine start, but you do not have to sort it out alone. Results vary, and individual circumstances differ, so talk with a registered health practitioner about what may suit you.

When it is time to talk to someone

If overthinking is affecting your sleep, work, relationships or mood on most days, it is worth speaking to a GP or psychologist.

If you have tried the ideas on how to stop overthinking above and the loop keeps returning, check whether any of these sound familiar:

  • Worrying or replaying thoughts on most days for several weeks or longer
  • Trouble falling or staying asleep because your mind will not settle
  • Avoiding people, tasks or decisions because thinking about them feels too hard
  • Often asking others for reassurance, or checking things again and again
  • Physical signs with worry, such as muscle tension, a racing heart or a tight chest
  • Feeling low, flat or hopeless as well as anxious
  • Friends, family or colleagues noticing a change in you

This list is not a diagnosis. Beyond Blue’s anonymous anxiety and depression test is one way to check in before you see your GP. Chest tightness can have medical causes, so see your GP promptly if it worries you.

How to get started in Australia

Start with your GP. They can talk through how you are going and, if suitable, prepare a Mental Health Treatment Plan so you can claim Medicare rebates for psychology sessions.

  1. Book a GP appointment. Describe what you are noticing, including sleep and mood.
  2. Ask about a Mental Health Treatment Plan. If your GP thinks it suits you, they will prepare one and refer you to a psychologist.
  3. Choose a psychologist. Look for someone registered with AHPRA whose approach and location suit you. Some practices, including Sage, offer a short phone call first to check the fit.
  4. Attend your first session. You will talk about what brought you in and what you would like to change.

Under Better Access, eligible people can claim Medicare rebates for up to 10 individual sessions each calendar year (Source: Department of Health, Disability and Ageing, 2026). The Department of Health’s Better Access page explains who is eligible. A rebate is not always the full fee, so ask about costs first.

You can see how fees and rebates work at Sage. Other funding pathways include DVA, the NDIS, workers’ compensation (WorkCover WA) and the Insurance Commission of Western Australia (ICWA).

Sage sees adults in person in East Fremantle, for people across Fremantle, Melville and Cockburn, and offers telehealth sessions across Western Australia. If you are under 25, headspace is another place to start.

If you would like to talk through your situation with a registered psychologist in East Fremantle, Jacob at Sage Psychological Services is happy to help.

Frequently asked questions

  • It can be. Overthinking is common in anxiety, especially the constant worry seen in generalised anxiety disorder. But people also overthink during stress, grief, low mood or big life changes, so it is not proof of an anxiety disorder. A GP or psychologist can help you work out what is behind it.
  • No. Overthinking is not a diagnosis on its own. It is a thinking pattern that can appear alongside conditions such as anxiety and depression. If it affects your sleep, mood or daily life, speak to a GP or registered psychologist, who can assess what is happening and talk through your options.
  • Overthinking describes what your mind is doing: looping over the past or the future. Anxiety is broader. It includes fear, tension and physical symptoms, and it can be diagnosed when it is persistent and hard to control. The two often overlap, but you can overthink without having an anxiety disorder.
  • It is a simple grounding exercise. You name three things you can see, listen for three sounds, and touch or move three things around you. It can help bring your attention back to the present. It is a coping skill, not a treatment, and it may not suit everyone.
  • Quiet, still moments give your mind space to loop, and tiredness can make worries feel bigger. You could write your thoughts down before bed and go easy on caffeine and alcohol in the evening. If poor sleep continues, speak to your GP. Results vary between people.
  • A registered psychologist can help you spot the patterns that keep your thinking looping and practise skills from approaches such as CBT and ACT. Sessions are collaborative and move at your pace. Results vary, and individual circumstances differ, so speak with a registered health practitioner about what may suit you.
  • You do not need a referral to see a psychologist privately. To claim Medicare rebates under Better Access, you need a Mental Health Treatment Plan from your GP, and rebates cover up to 10 individual sessions per calendar year (Source: Department of Health, Disability and Ageing, 2026). A rebate may not cover the full fee.

This article is general information only. It is not a diagnosis or a substitute for advice from a registered health practitioner. If you are worried about your mental health, speak with your GP or a registered psychologist.

Jacob Jones, registered psychologist and founder of Sage Psychological Services in East Fremantle
About the author

Jacob Jones

Registered Psychologist · BA (Psychology), GradDip (Psychology) · AHPRA PSY0002462461

Jacob is a registered psychologist and founder of Sage Psychological Services in East Fremantle, Western Australia. He works with adults across anxiety, trauma, depression, addiction and grief, with particular expertise in psychodynamic approaches and evidence-based therapies including CBT and EMDR.

When the loop keeps running.

Sage Psychological Services offers anxiety therapy in East Fremantle and by telehealth across Western Australia. A first session is simply a conversation about the thinking that has been looping and what kind of support might suit you.

This article is general information only and is not a substitute for individual psychological assessment or advice. Everyone’s circumstances differ. If something here resonates with you, speaking with a registered psychologist or your GP is the appropriate next step.