Why You Keep Overthinking: Understanding the Need for Certainty

We all overthink sometimes.

A conversation that did not quite go as planned. A decision we are unsure about. Something someone said that we cannot stop replaying.

We tell ourselves that if we think about it for long enough, we will eventually work it out. Perhaps we will find the right answer, understand what someone meant or know exactly what to do.

But sometimes, the more we think, the more uncertain we become.

One thought leads to another. We analyse, reconsider, imagine different outcomes and go over the same situation again and again. At some point, thinking stops helping us solve a problem and starts keeping us stuck inside it.

So why do we do it?

Overthinking Is Often an Attempt to Feel Safe

It can be tempting to think of overthinking as simply having an overactive mind. But often there is something underneath it.

Overthinking can be an attempt to create a sense of certainty in situations where certainty is not actually possible.

If we can think through every possible outcome, perhaps we can prevent something going wrong. If we analyse a conversation carefully enough, perhaps we can work out whether someone is upset with us. If we keep reconsidering a decision, perhaps we can guarantee that we make the right one.

The difficulty is that life does not offer many guarantees.

Relationships are unpredictable. Other people have their own thoughts and feelings. Decisions often involve uncertainty. Sometimes, no amount of thinking can tell us exactly what is going to happen.

Yet the mind can keep trying.

When Thinking Becomes a Form of Control

For some people, overthinking is closely connected to a need for control.

If something feels uncertain, thinking can create the temporary feeling that we are doing something about it. We are not simply sitting with uncertainty; we are analysing it, searching for clues and trying to anticipate what might happen next.

This can feel productive.

But there is an important difference between thinking something through and trying to think our way out of uncertainty.

The first can help us make decisions. The second can become a cycle.

We think because we feel uncertain, but the thinking creates more questions, which creates more uncertainty, which leads to more thinking. Before long, we can find ourselves having the same internal conversation repeatedly without feeling any closer to an answer.

The Search for the 'Right' Answer

Overthinking is particularly common when we believe there is a perfect answer to be found.

What if I make the wrong decision? What if I regret it? What if they are annoyed with me? What if I have misunderstood? What if something goes wrong?

Sometimes, underneath these questions is the belief that we should be able to work things out before we act.

But many important decisions in life cannot be made with complete certainty. We often have to make choices with incomplete information, knowing that we cannot predict every possible outcome.

We have to trust ourselves enough to know that, even if something does not go according to plan, we will be able to respond to it.

This can be particularly difficult for people who have learned to rely heavily on external reassurance or who have developed very high expectations of themselves. The problem is not necessarily that they do not know what to do. It may be that they do not trust themselves enough to tolerate the possibility of getting it wrong.

What Are You Really Afraid Of?

Sometimes it can be useful to look beyond the thoughts themselves.

If you find yourself repeatedly analysing a situation, ask yourself what you are actually hoping to achieve by thinking about it. Are you trying to find an answer? Trying to prevent something from happening? Looking for reassurance? Trying to make sure nobody is disappointed in you? Or are you trying to avoid the uncomfortable feeling of not knowing?

These questions can take us underneath the overthinking.

Because often, the real difficulty is not the thought itself. It is the feeling we are trying not to experience.

That might be anxiety, guilt, disappointment, vulnerability, rejection or simply uncertainty.

Understanding this can be important. If the thinking is serving a purpose, simply telling yourself to stop thinking is unlikely to address what is really going on.

Learning to Live With Not Knowing

Reducing overthinking is not necessarily about trying to stop thinking. In fact, trying to force your mind to stop can sometimes become another form of control.

Instead, therapy can help us understand what the thinking is doing for us. What does it protect us from? What does it help us avoid? What might happen if we did not analyse the situation one more time?

Over time, we can begin to develop a greater tolerance for uncertainty.

This does not mean becoming careless or making decisions without thinking. It means learning that we do not always need complete certainty before we can move forward.

Sometimes we can make the best decision we can with the information available. Sometimes we can accept that we may never know exactly what someone else was thinking. Sometimes we can allow a conversation to remain slightly unresolved.

And sometimes we can trust ourselves to deal with whatever happens next.

From Certainty to Self-Trust

At the heart of overthinking, there is often a question of trust. Not necessarily trust in other people, but trust in ourselves.

Can I cope if I make the wrong decision? Can I tolerate someone being disappointed with me? Can I sit with uncertainty without immediately trying to resolve it? Can I trust my own judgement, even when I cannot guarantee the outcome?

These are not questions that can always be answered through more thinking. Sometimes they are developed through experience.

We make a decision and discover that we can cope. We allow someone to be disappointed and realise that the relationship survives. We resist the urge to seek reassurance and discover that the uncertainty eventually passes.

Little by little, we learn that we do not need to know exactly what is going to happen in order to be okay.

Perhaps one of the most important shifts therapy can help us make is moving from asking, “How can I be certain this will be okay?” to asking, “Whatever happens, can I trust myself to handle it?”

If you find yourself caught in cycles of overthinking, therapy can provide a space to explore not only what you are thinking about, but what sits underneath the need to keep thinking. Understanding the pattern can be the first step towards feeling more able to step out of it.