Why do I overreact
to small things?

This is what psychoanalysis has understood for over a century, and what neuroscience has now confirmed: we rarely react to what is actually in front of us. We react to what it reminds us of. We react to what it means — and that meaning was written long before today.

Your brain has a very good
(outdated) alarm system

Think of your brain as having two parts working at the same time.

Your thinking brain is the part that can reason, reflect, and understand context. It's the part reading this right now.

Your alarm brain is a much older, faster system whose only job is to detect threat and respond — immediately, before you've had a chance to think.

Here's the problem: your alarm brain is fast, but it does not have a sense of time. Neuroscientist Joseph LeDoux's research showed that the brain's threat-detection centre — the amygdala — can fire a stress response in milliseconds. It doesn't wait for context. It doesn't check the calendar. It simply recognises a pattern that once felt dangerous, and it reacts.

A dismissive tone of voice. Being left waiting. A door closing too hard.

To the alarm brain, these are not small things. They are signals — signals that were first encoded, perhaps decades ago, in moments that were genuinely painful or frightening.

The overreaction isn't a problem with your character. It's your alarm system doing exactly what it was trained to do. The question is: who trained it, and when?

The past that
lives in the present

The psychoanalyst Sigmund Freud observed something in his patients that he called the repetition compulsion — the unconscious tendency to keep recreating familiar emotional dynamics, even painful ones. Not because we enjoy suffering, but because the unfinished emotional business of our past keeps looking for a resolution it never found.

If you grew up in a home where love felt unpredictable — where a parent's mood could shift without warning, where affection had to be earned, where being "too sensitive" was treated as a problem — your nervous system learned something.

It learned to be ready. Always ready. Scanning constantly for signs of withdrawal, criticism, rejection, or abandonment.

A one-word reply isn't just a one-word reply. It is evidence that the old familiar story is about to repeat itself.

Your attachment history
is showing

Psychologist John Bowlby proposed that human beings are biologically wired for connection — that the need to feel securely attached to another person is not a weakness, but a survival mechanism. The quality of our earliest attachments creates what he called internal working models: unconscious blueprints for how relationships work, how worthy of love we are, and how safe the world is.

Researcher Mary Ainsworth later identified distinct patterns — attachment styles — that emerge from these early experiences:

None of these styles are permanent. None are your fault. And all of them can shift with the right support.

Five overreactions —
decoded

Here are the most common triggers people bring to therapy, and what they often represent beneath the surface:

Then why do I feel so
ashamed of it?

This is the part that does the most damage — not the overreaction itself, but the wave of self-criticism that follows.

I'm so embarrassing. I'm too much. No one can handle me.

Here is what's important to understand: that voice is almost certainly not originally yours.

Somewhere along the way, your sensitivity was treated as a problem. You were told to calm down, toughen up, not be so dramatic. The message — spoken or unspoken — was: your emotional experience is too much, and it is your job to manage it alone.

You internalised that message so completely that you now deliver it to yourself, automatically, every time a feeling gets too big.

The shame that follows the overreaction is often more painful than the overreaction itself. And it is just as much a wound as everything that came before it.

What actually
helps

• 01
  Slow the body before the mind.
  When you're triggered, your thinking brain is temporarily offline. The fastest way to bring it back is through the body. A slow exhale — longer than the inhale — activates the parasympathetic nervous system. This is not a trick. It is physiology.
• 02
  Name what you're feeling.
  Research by neuroscientist Matthew Lieberman found that simply labelling an emotion — I feel scared, I feel rejected, I feel small — reduces activation in the amygdala. Naming a feeling changes your relationship to it. You move from being it to having it.
• 03
  Get curious instead of self-critical.
  Replace what is wrong with me with what is happening in me? When you notice a big reaction, try: how old does this part of me feel right now? What does this remind me of? This is the beginning of the kind of self-knowledge that changes things.
• 04
  Work with someone who can go deeper.
  The roots of emotional reactivity are often pre-verbal — laid down before you had words for what was happening. Psychodynamic therapy works with the unconscious material beneath the surface: not just the reactions, but their origins. A landmark review published in the American Psychologist found that psychodynamic therapy produces lasting change — and that gains continue to grow after therapy ends.

You are
not too much

The overreaction — the tears, the rage, the shutdown, the spiral — is not evidence that something is irreparably wrong with you.

It is evidence that something happened. That you felt things deeply, and didn't always have the support to process them. That your nervous system adapted, as it was always going to, to the world it was given.

The work is not to become someone who doesn't feel things so intensely. The work is to understand where the intensity comes from — and slowly, with support, to build enough internal safety that the present no longer has to carry the full weight of the past.

If you find yourself asking why do I overreact to small things, know that the question itself is the beginning of something important.