Have you ever found yourself replaying a conversation from earlier in the day, wondering whether you said the wrong thing? Or perhaps you spend hours thinking about a decision, imagining every possible outcome before you feel comfortable making a choice. Maybe you find it difficult to relax because your mind always seems to be working through the next problem.
If this sounds familiar, you're not alone.
Overthinking is a common experience, particularly for people who struggle with anxiety, perfectionism or a strong need for certainty. While thinking things through can be helpful, there comes a point where thinking stops being productive and starts becoming exhausting.
As a counsellor supporting adults in Brisbane and across Queensland, I often explore how patterns of overthinking can affect confidence, relationships, decision-making and emotional wellbeing. Understanding why we overthink is an important first step towards changing our relationship with our thoughts.
What is overthinking?
Overthinking occurs when we become caught in repetitive patterns of thinking that don't necessarily lead to a solution.
It might involve:
Replaying conversations and questioning what you said
Imagining worst-case scenarios
Worrying about things that haven't happened
Analysing decisions long after you've made them
Constantly questioning whether you've done the right thing
Seeking reassurance from others
Struggling to switch off, particularly at night
Feeling responsible for preventing things from going wrong
The difficulty with overthinking is that it often feels productive.
You might believe that if you think about something long enough, you'll eventually find the perfect answer, avoid making a mistake or feel completely certain.
Unfortunately, more thinking doesn't always create more clarity. Sometimes, it simply creates more questions.
Why do we overthink?
There isn't one single reason people overthink. However, several psychological patterns can contribute.
1. Anxiety and the need for certainty
Anxiety often involves anticipating possible threats or negative outcomes.
When something feels uncertain, the brain may respond by trying to predict and prepare for every possibility.
For example, if you're waiting to hear back about a job application, you might find yourself analysing the interview, questioning your answers or imagining what rejection would mean.
The underlying belief might be:
"If I can work out what's going to happen, I'll feel better."
However, many situations in life don't offer complete certainty.
Learning to tolerate uncertainty, rather than trying to eliminate it, can be an important part of managing anxiety.
2. Perfectionism and fear of making mistakes
Overthinking and perfectionism often go hand in hand.
If you hold yourself to extremely high standards, even relatively small decisions can feel significant.
You might spend excessive time drafting an email, worrying about whether you've upset someone or questioning whether your work is good enough.
Perfectionism isn't always about wanting everything to be perfect. Sometimes, it's about being afraid of what might happen if something isn't perfect.
This fear can lead to procrastination, avoidance and constant self-criticism.
3. Rumination and replaying the past
Rumination involves repeatedly thinking about distressing experiences, feelings or problems without moving towards a useful resolution.
For example, you might replay an awkward interaction and repeatedly ask yourself:
"Why did I say that?"
"What must they think of me?"
"Why can't I just let this go?"
Although you may be trying to understand what happened, the process can leave you feeling increasingly anxious, embarrassed or upset.
Rumination can also be associated with depression, particularly when thoughts become focused on perceived failures, regrets or negative beliefs about yourself.
4. Overthinking and OCD
For some people, repetitive thinking may be connected to Obsessive-Compulsive Disorder (OCD).
OCD can involve unwanted, intrusive thoughts that create significant distress, alongside compulsions intended to reduce that distress or gain certainty.
Importantly, compulsions aren't always visible behaviours.
They can also involve mental activities, such as repeatedly reviewing memories, mentally checking, analysing thoughts or trying to reassure yourself that something is okay.
While everyday overthinking and OCD-related rumination can appear similar, they aren't necessarily the same.
Not everyone who overthinks has OCD, and identifying the difference can be important when deciding which therapeutic strategies may be helpful.
Please remember that OCD needs a diagnosis from a psychologist; however as a counsellor I am work with you on techniques to manage OCD or OCD symptoms.
Why does overthinking feel so difficult to stop?
One reason overthinking can become persistent is that it often provides a temporary sense of control.
Imagine you're worried that you've upset a friend.
You replay the conversation, analyse their responses and perhaps ask someone else whether they think you've done anything wrong.
For a moment, you might feel reassured.
But later, another question appears:
"What if they were just being polite?"
And the thinking begins again.
Over time, repeatedly trying to eliminate doubt can make uncertainty feel increasingly uncomfortable.
The goal isn't necessarily to stop having anxious thoughts. It's to develop a different way of responding when those thoughts appear.
How to manage overthinking
There isn't one strategy that works for everyone, but the following approaches can be helpful.
1. Notice when thinking becomes rumination
Ask yourself:
"Am I working towards a solution, or am I going over the same thing again?"
Productive problem-solving usually involves identifying a problem, considering realistic options and taking an appropriate action.
Rumination often involves repeatedly asking the same questions without reaching a useful conclusion; usually, the problem is unsolvable.
Recognising the difference can help you decide whether further thinking is actually necessary.
2. Practise accepting uncertainty
One of the most challenging aspects of anxiety is accepting that we cannot know or control everything.
You might not know exactly what someone thinks of you.
You might not know whether a decision will work out perfectly.
And you might not be able to guarantee that something won't go wrong.
Rather than repeatedly searching for certainty, practise acknowledging:
"I don't know exactly what will happen, and I can still move forward."
This doesn't mean ignoring genuine problems. It means recognising when the pursuit of certainty has become unhelpful.
3. Challenge perfectionistic expectations
If you regularly overthink decisions, consider whether you're expecting yourself to make the perfect choice.
Ask yourself:
What would a good-enough decision look like?
Am I holding myself to an unrealistic standard?
Would I expect someone else to get this exactly right?
What could I learn if things don't go as planned?
Sometimes, allowing yourself to make an imperfect decision is more valuable than spending hours trying to make a flawless one.
4. Redirect your attention towards action
When you notice yourself becoming stuck in repetitive thinking, consider whether there is a practical step you can take.
If there is, identify the smallest useful action.
If there isn't, practise allowing the thought to remain unresolved while returning your attention to something meaningful.
This might involve going for a walk, completing a task, spending time with someone or engaging in an activity you enjoy.
The intention isn't to force the thought away, but to recognise that you don't have to respond to every thought your mind produces.
5. Be mindful of reassurance-seeking
Asking for support is healthy and important.
However, repeatedly asking others to confirm that everything is okay can sometimes maintain anxiety, particularly when reassurance becomes something you feel unable to cope without.
If you notice this pattern, consider whether you're seeking useful information or trying to eliminate an uncomfortable feeling of uncertainty.
For people experiencing OCD, reducing compulsive reassurance-seeking is often best approached with guidance from a suitably trained mental health professional.
When should you seek counselling for overthinking?
Overthinking may be worth exploring with a counsellor if it is:
Affecting your sleep
Making decisions feel overwhelming
Interfering with work or relationships
Contributing to persistent anxiety or low mood
Leading to avoidance or procrastination
Taking up significant amounts of your day
Making it difficult to relax or enjoy everyday life
You don't need to wait until things become unmanageable before seeking support.
Counselling can help you understand the patterns behind your thinking, explore underlying beliefs and develop strategies suited to your individual circumstances.
Learning to live without having all the answers
Overthinking often comes from a very understandable place: wanting to feel safe, prepared and in control. But trying to think your way out of every uncomfortable feeling can become exhausting.
It’s important to remember that you don't have to solve every thought, predict every outcome or make every decision perfectly. Sometimes, progress involves learning that uncertainty can exist without needing an immediate answer.
Looking for anxiety counselling in Brisbane (or in Australia)?
At Home Mind Therapy, I provide private counselling for adults in Brisbane and across Queensland via telehealth, supporting concerns including anxiety, overthinking, OCD, perfectionism and emotional wellbeing. In Brisbane only, I offer walk-and-talk sessions so we can chat while getting in some steps and soaking in the QLD sunshine.
If you're feeling overwhelmed by your thoughts and would like support developing a healthier relationship with them, you can book a free 15-minute introductory call to discuss whether counselling might be right for you.