Think about the last time you watched The Conjuring, Get Out, or A Quiet Place. What made those movies so terrifying? Sure, there were ghosts, sinister twists, and creatures lurking in the shadows. But some of the most suspenseful moments happened before anything actually appeared. It was the creaking floorboard, the unexplained noise, or the character slowly opening a door without knowing what was waiting on the other side.
The fear of what might happen can sometimes be more powerful than seeing what actually does.
Interestingly, your brain can respond to everyday uncertainty in much the same way. Waiting for medical test results, wondering whether a relationship is going to work out, or anticipating an important conversation can trigger a surprisingly intense stress response.
There’s no monster hiding in your closet. There’s just a question you can’t answer yet.
And somehow, that can feel just as frightening.
Your Brain Is a Prediction Machine
Research published in Nature Reviews Neuroscience, titled Uncertainty and Anticipation in Anxiety: An Integrated Neurobiological and Psychological Perspective, by psychologists Dan Grupe and Jack Nitschke explores how uncertainty contributes to anxiety through increased threat anticipation, heightened vigilance, and difficulty distinguishing between safety and danger.
When we don’t know what to expect, our brains may become more alert as they attempt to prepare for potential threats.
Think of it as your brain’s internal security system. When everything is familiar, the alarm stays quiet. When something unexpected happens, the system starts checking the doors.
That response can be helpful when facing a genuine threat. However, it becomes exhausting when the alarm keeps sounding over situations that aren’t actually dangerous—like a delayed text message from a friend or a minor mistake at work.
Why Not Knowing Can Feel Worse Than Bad News
Sometimes, people find uncertainty more stressful than knowing that something unpleasant is definitely going to happen. Psychologists call this phenomenon intolerance of uncertainty.
Someone with high intolerance of uncertainty may struggle to tolerate even relatively small unanswered questions. For example, imagine two people waiting for feedback after a job interview.
- Person A knows they didn’t get the position. They’re disappointed, but they can begin considering other opportunities.
- Person B hasn’t heard anything. They mentally replay every answer from the interview, check their email repeatedly, imagine they’ve been blackballed from their entire industry, and wonder if they are doomed to be unemployed forever.
Although Person A received disappointing news, Person B suffers more sustained anxiety because the situation remains unresolved.
This helps explain why waiting can be so emotionally draining. Your mind wants closure. It wants a definite answer, even if that answer isn’t particularly pleasant.
How Uncertainty Fuels the Anxiety Cycle
When uncertainty feels threatening, your brain can fall into a repetitive pattern that reinforces anxiety.
- Something uncertain happens. You notice an unfamiliar symptom, receive an unexpected email, or face an upcoming change.
- Your mind searches for an explanation. You begin imagining possible outcomes, including frightening ones.
- Your anxiety increases. You feel tense, restless, distracted, or unable to concentrate.
- You seek immediate reassurance. You repeatedly check your phone, search online, ask others for confirmation, or avoid making a decision.
- You experience temporary relief. The reassurance makes you feel better for a little while.
- The cycle returns. The next uncertain situation you encounter triggers the same response.
Avoidance and repeated reassurance-seeking reduce discomfort in the short term without giving your brain an opportunity to learn that uncertainty is manageable.
Making Peace With the Unknown
Building tolerance for uncertainty is about developing the ability to move forward even when you don’t have every answer. This can be accomplished by taking a few small steps each day.
1. Separate What You Know From What You Fear
Anxiety can make possibilities feel like facts. If a friend hasn’t responded to your last text message, for example, your mind might jump to the conclusion that they’re angry. But the only fact you actually know is that they haven’t responded yet.
Try dividing a piece of paper into two columns:
- What I know: In this example, you know that your friend hasn’t replied.
- What I’m imagining: They’re upset with me, I’ve said something wrong, or the relationship is changing.
This simple exercise helps create distance between evidence and anxious predictions.
You don’t have to force yourself to think positively. Just remind yourself that an unknown outcome isn’t automatically a negative one.
2. Practice Small Doses of Uncertainty
Psychological treatments such as cognitive behavioral therapy (CBT) and exposure-based approaches can help people gradually change their responses to anxiety-provoking situations.
One useful strategy is to practice tolerating manageable uncertainty rather than immediately trying to eliminate it.
- Resist checking your email every five minutes.
- Allow someone else to choose the restaurant.
- Make a small decision without researching every possible option.
- Wait a little before asking someone for reassurance.
- Try a new activity without knowing exactly how it will go.
Start with situations that feel uncomfortable but manageable. The purpose isn’t to overwhelm yourself. It’s to give your brain repeated opportunities to discover that uncertainty can be tolerated.
3. Bring Your Attention Back to the Present
When you’re worried about the future, your attention can become trapped in imagined scenarios. Grounding techniques help redirect your focus toward what’s happening right now.
Try the 5-4-3-2-1 exercise:
- Identify five things you can see.
- Notice four things you can feel.
- Listen for three sounds.
- Identify two things you can smell.
- Notice one thing you can taste.
We offer additional practical suggestions in Using Grounding Techniques to Manage Your Mental Health.
4. Set Boundaries Around Worry
If you find yourself repeatedly analyzing the same problem, consider setting aside a specific 10- to 15-minute period for intentional reflection. During that time, ask yourself:
- Is there something practical I can do?
- What information am I actually missing?
- Is this something I can influence?
- If I can’t control the outcome, what would help me cope with it?
When the worry returns outside that window, gently remind yourself that you’ve already made time to consider it. This approach, sometimes called scheduled worry, can help reduce the amount of attention anxiety receives throughout the day.
5. Focus on Building Confidence in Your Ability to Cope
One of the most powerful shifts you can make is moving away from the belief that you need to know everything will work out. Instead, try developing confidence that you can respond even if things don’t go according to plan.
Rather than thinking, “What if I fail?” Consider asking, “If this doesn’t work out, what could I do next?” This isn’t pessimism. It’s realistic preparation without demanding certainty.
You may not be able to control whether a relationship lasts, whether you get the promotion, or whether a plan succeeds. However, you can develop problem-solving skills, emotional flexibility, and the ability to proactively ask for support.
When Uncertainty Becomes More Than Everyday Stress
Occasional anxiety about the unknown is normal. However, when worry becomes persistent, overwhelming, or disruptive to everyday functioning, it may indicate a more significant mental health concern.
At Raleigh Oaks Behavioral Health in Garner, North Carolina, people struggling with anxiety can access professional treatment and evidence-based support. Our clinical team provides care for anxiety disorders, including generalized anxiety disorder, panic disorder, obsessive-compulsive disorder, post-traumatic stress disorder, and social anxiety disorder. Contact us today for a confidential assessment.
