By Ari Sotiriou MA PGDip psychodynamic psychotherapist
Flashbacks are one of the most disorienting experiences a person can have.
One moment you are going about your day. The next, something — a sound, a smell, a tone of voice — pulls you somewhere else entirely. Your body reacts as though the past is happening right now. Your heart rate climbs. Your thinking narrows. You are no longer quite here.
From the outside, a flashback can look like overreaction. From the inside, it feels completely real. That gap between how it looks and how it feels is one of the loneliest aspects of living with trauma.
Understanding why flashbacks happen — and having practical tools to work with them — can make a significant difference.
Why Flashbacks Feel So Real
The brain stores traumatic memories differently from ordinary ones.
In a normal memory, the brain files the experience with a clear time stamp: this happened, it is over, it belongs to the past. Traumatic memories do not always get filed that way. Instead, they can remain in a kind of unprocessed state — vivid, charged, and without a clear marker that they are finished.
When something in the present triggers one of these memories, the brain does not always register that it is a memory. It responds as though the event is happening again. The body floods with the same sensations. The same fear, the same helplessness, the same urgency to escape.
This is not weakness. It is not a failure of willpower or character. It is the nervous system doing precisely what it was designed to do — protect you from danger. The problem is that it can no longer distinguish between then and now.
The Sequence That Matters
Cognitive Behavioural Therapy offers structured ways of working with flashbacks. But there is an important principle that underpins all of them:
Body first. Orientation next. Thoughts last.
Trying to reason with a flashback while you are fully overwhelmed rarely works — and can feel frustrating and demoralising. The nervous system needs to be brought out of the threat response before any thinking can happen. That means grounding first: reconnecting to the physical present, to what you can see and hear and touch right now.
Once the intensity has dropped even slightly, it becomes possible to orient — to remind yourself where you are, how old you are, what is actually true in this moment. Only then does it make sense to engage with the thoughts and beliefs the flashback carries.
Two Pathways Through
Not every flashback is the same, and not every moment is the right moment for deep reflection.
The Grounding Method is designed for use during or immediately after a flashback. It is direct, body-first, and deliberately simple. The 5–4–3–2–1 technique — naming things you can see, feel, hear, smell and taste — is one of the most effective ways of pulling attention back to the present. Paired with a short, clear statement (this is a memory, I am safe right now), it helps the brain begin to update its understanding of where and when you actually are.
The Classical CBT Method goes further. It is suited to quieter moments, when you have enough distance from a flashback to reflect on it. This includes identifying the recurring triggers that precede flashbacks, separating what was true then from what is true now, challenging distorted beliefs about responsibility and self-blame, and building a personalised safe place you can return to mentally when distress rises.
Both pathways are complementary. Most people find they need both.
What These Exercises Cannot Do Alone
CBT tools are genuinely useful. For many people they reduce the frequency and intensity of flashbacks over time, and — perhaps more importantly — reduce the fear of flashbacks themselves.
But it is worth being honest: for trauma that is deeply embedded, these exercises work best as part of a wider therapeutic process. Approaches such as Trauma-Focused CBT, EMDR, and Somatic Experiencing are specifically designed for this kind of experience. They go further than self-help tools can.
If you find that flashbacks are disrupting your daily life, your relationships, your sleep, or your sense of who you are, that is not a sign that you are failing to manage. It is a sign that you deserve proper support.
The Worksheet
Alongside this article, we have produced a free interactive worksheet that takes you through both methods step by step.
It covers the 5–4–3–2–1 grounding sequence, trigger mapping, the then-versus-now exercise, safe place visualisation, the self-blame challenge, and compassionate reparenting — all in a structured, private format that saves your responses locally on your own device.
Nothing you write is transmitted or stored anywhere. It is for you alone.
Thinking About Therapy?
If this article has touched on something you recognise in your own experience, you are not alone — and you do not have to manage it by yourself.
At Online Therapy Clinic, we offer individual therapy via secure live video for people dealing with trauma, flashbacks, and the ways past experiences continue to shape the present. Our approach draws on both psychodynamic and CBT frameworks, and is tailored to the individual.
A free 15-minute introductory conversation is available, with no obligation.
Book a complimentary consultation →
Or contact us directly at enquiries@online-therapy-clinic.com
Audio narration produced using ElevenLabs voice technology.