The Anxiety Equation (Part 2): Why Your Brain Overestimates Threat

Episode 129: Spotify | Apple Podcasts | YouTube
View transcript on Buzzsprout

A text comes in that says “We need to talk.” Before you’ve even set your phone down, your mind has already written the ending. You’re getting fired. The relationship is over. Something terrible happened. Your chest is tight and your breath is shallow, all over five words with no context.

If that sounds familiar, you’re in very good company. Assuming the worst is one of the most common ways anxiety shows up, and it has a clear biological explanation.

In Part 1 of this series, we introduced The Anxiety Equation: Anxiety = Overestimation of Threat + Underestimation of Capacity

This post focuses on the first half of that equation. We’ll look at why your brain is wired to overestimate threat, how early experiences can turn that wiring up even higher, and three practical tools that help your nervous system respond to the actual level of danger in front of you.

---

What We Cover in This Episode

• Why negativity bias is a survival skill that’s poorly suited to modern life
• How childhood experiences can set your internal alarm system to its highest setting
• The connection between your nervous system state and the stories you tell yourself
• Three tools to right size a threat in the moment

---

Your Brain Is Built to Assume the Worst

Let’s start with something that might take some pressure off. Overestimating threat says nothing bad about your character or your strength. It’s your nervous system doing its number one job, which is keeping you alive.

Think about our ancestors. The ones who survived were rarely the ones who heard rustling in the bushes and decided it was probably just the wind. They were the ones who assumed it was a predator and ran. The cautious, watchful ones lived long enough to pass on their genes. In a very real sense, we’re all descendants of the worriers.

Psychologists call this negativity bias. Your brain gives more weight to potential danger than to potential reward or neutral information. Some research suggests it takes roughly five positive experiences to balance out a single negative one. That’s how strongly your brain prioritizes spotting threat.

Ancient Wiring, Modern Triggers

Here’s where it gets tricky. The same system that once protected us from predators now fires for an email from your boss, an unfamiliar sensation in your body, or a shift in someone’s tone of voice. Your nervous system has a hard time telling the difference between a real tiger and a metaphorical one.

So your heart races and your mind jumps to heart attack. A headache becomes a brain tumor. A friend who hasn’t texted back must be upset with you. In each case, your brain fills the gap in information with the most dangerous possible explanation, because in its view, being wrong in the cautious direction is the safer mistake.

How Childhood Turns the Alarm Up

Early life experience adds another layer. If you grew up in an environment where you had to stay on high alert, maybe because of inconsistency, criticism, or chaos at home, your threat detection system learned to run hotter. Scanning constantly for danger made sense at the time. It helped you anticipate what was coming and protect yourself.

That learning doesn’t automatically switch off when you grow up. As an adult, a vague text or a closed door can still set off the same response your body learned years ago. You’re reacting to the present with a system that was calibrated for a different time and place. Understanding this can soften a lot of the frustration people feel toward their own anxiety. Your system adapted intelligently to what it was given.

Potato Salad Logistics: A Real Life Example

I caught myself doing this just last week. A friend texted me, “Call me when you can.” Period. No context.

My brain went straight to the worst. Someone’s in the hospital. Something terrible happened. There’s bad news. I could feel my chest tighten and my breath get shallow. The threat felt massive.

Then I paused and asked myself the same question I teach: What do I actually know right now? The answer was simple. My friend wants to talk. That was the only fact I had.

It turned out she wanted to know what to bring to dinner on Sunday. My nervous system had me bracing for catastrophe over potato salad logistics.

My brain and yours are doing exactly what they learned to do: assume the worst in order to keep us safe. Most of the time, though, the actual threat is nowhere near what we’re imagining.

Your State Determines Your Story

This connects to a core idea we come back to again and again on Regulate & Rewire: your state determines your story. Whatever state your nervous system is in becomes the lens you see everything through.

When you’re in a shutdown state, what I often call the red zone, it’s like wearing glasses tinted red. Nothing seems to matter very much, and there’s a helpless or hopeless edge to everything.

When you’re in an anxious, activated state, the yellow zone, your brain’s job is to create stories that match the feeling of danger in your body. That’s where the what ifs and worst case scenarios come from. The body feels threatened, so the mind goes looking for a reason.

This is why working with your body matters so much. Thought tools are powerful, and they work best alongside practices that help your nervous system return to a more regulated baseline. Inside the Regulated Living Membership, you’ll find guided somatic practices and nervous system education built for exactly that, so the stories your brain tells start to reflect reality more accurately.

Three Tools to Right Size the Threat

When you notice your brain spinning toward the worst, try one of these.

1. The Reality Check Question

“What do I actually know to be true right now?”

Set aside what might happen and what happened last time, and look only at the facts you have in this moment. Often you’ll realize you’re responding to a story your mind created rather than actual data.

2. The Percentage Game

“If I had to bet money, what’s the real chance the worst case scenario happens?”

Putting a number on it can be surprisingly clarifying. Many people discover they’ve been treating a 5% possibility as if it were 95% certain.

3. The Friend Filter

“If my best friend came to me with this exact situation, what would I tell them?”

Most of us are far better at assessing threat accurately for someone else. Borrowing that outside perspective gives you access to the calmer, more balanced view you already have.

Updating Outdated Software

Overestimating threat is your nervous system trying to protect you with outdated software. The goal is to help it calibrate to actual threat rather than perceived threat. Anxiety will still show up sometimes, and that’s okay. What changes is how quickly you can recognize the story and bring your system back to what’s real.

This week, practice catching yourself in the act of overestimating threat. Notice it with curiosity and without judgment. Your brain is trying to keep you safe. You’re simply helping it update its files for modern life instead of 10,000 BCE.

In Part 3, we’ll look at the other side of the equation: why we lose sight of how capable we are, especially in the moments we need that reminder most.

---

Three Tangible Takeaways

1. Assuming the worst is biology at work. Negativity bias helped our ancestors survive, and early experiences of chaos or criticism can turn that alarm up even higher. Your system is doing what it learned to do.
2. Your state shapes your story. When your nervous system is activated, your brain creates explanations that match the danger you feel. Supporting regulation in your body helps your thoughts reflect reality more accurately.
3. You can right size a threat in the moment. Use the Reality Check Question, the Percentage Game, and the Friend Filter to separate the facts from the story your mind is telling.

---

Looking for more personalized support?

• Book a FREE discovery call for RESTORE, our 1:1 anxiety & depression coaching program (HSA/FSA eligible & includes comprehensive bloodwork)
• Join me inside the Regulated Living Membership, a mental health membership and nervous system healing space (sliding scale pricing available)
• Join my Release Class, a monthly guided nervous system regulation class
• Order my book, Healing Through the Vagus Nerve today!
• Download free resources here

*Want me to talk about something specific on the podcast? Let me know HERE.

Disclaimer: This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or qualified mental health provider with any questions you may have regarding a medical condition.