When Your Past Shows Up in the Present: Understanding Your Automatic Reactions

I was walking along the beach this week when I noticed a pippi digging its way back under the sand. I smiled, and a sense of calm washed over me. It was instant. I didn’t try to feel relaxed or talk myself into it. My nervous system simply remembered.

As a child, I spent summers at the beach with attuned caregivers who showed me how to find pippis, gently collect them and then release them, watching as they disappeared back into the sand. Those moments of safety, connection and care became part of my body’s memory.

Now, as an adult, seeing pippis brings up that same feeling of ease. My body responds before my mind has a chance to analyse what’s happening.

This is how our past often shows up in the present.

When the Nervous System Remembers

We all have experiences like this. A familiar scent, a family recipe, a song, a tone of voice. Sometimes these moments feel comforting and warm. Other times, they create a sudden sense of tension, anxiety or withdrawal.

These reactions don’t come from conscious thought. They come from the nervous system. Our nervous systems are constantly scanning the environment for signs of safety or danger. This often happens beneath our awareness. We don’t decide to feel safe or unsafe. Our bodies make that call for us, based on past experience.

That’s why you might feel on edge around certain people, shut down in particular situations or unusually calm in places that feel familiar. Your body is responding to old patterns, not necessarily what is happening right now.

Why Reactions Can Feel So Automatic

This helps explain why we sometimes react in ways that surprise us.

You might notice yourself becoming defensive in a relationship conflict, freezing before speaking in a meeting or suddenly feeling “not good enough” without a clear reason. These responses are not flaws. They are protective reactions shaped by what your nervous system has learned over time.

Internal Family Systems therapy offers a gentle way to understand this. It helps us notice the parts of ourselves that step in automatically, the ones that protect us by staying alert, holding back or preparing for threat.

When we slow down and get curious about these parts, rather than judging or trying to override them, something important happens. We begin to understand what they’re protecting us from and why they’ve learned to react this way.

Past Experiences, Present Relationships

Our lived experiences influence all of our relationships. They can help to explain why one person might feel neutral to a comment that deeply unsettles someone else. Why misunderstandings can escalate quickly. Why some connections feel easy and others feel tense, even when there’s no obvious reason.

Each of us is bringing a nervous system shaped by our own history into every interaction.

Creating More Choice

Therapy can offer a supportive space to explore these automatic responses with care and compassion. With curiosity, safety and human connection, it becomes possible to notice when your body is reacting to the past and gently bring yourself back into the present.

Over time, this creates more choice. Less reactivity. More clarity. A deeper sense of safety within yourself and in your relationships.

Not by forcing change, but by understanding what your nervous system and inner parts have been trying to do for you all along.