By the time most people turn 7, their nervous system has already absorbed more than they realise. Experiences in early childhood aren’t stored as memories in the typical way. Instead, they’re encoded physically through bodily responses to emotions and surroundings. These repeated felt experiences leave a lasting imprint and shape how adults feel safe or unsafe.

Early stress doesn’t have to be dramatic to matter. Everything from constant tension, dismissal, inconsistent care, or emotional neglect teaches the nervous system one thing: caution. When these moments happen often enough, the body adapts. It learns to stay on alert rather than relaxed, even if everything seems fine.

Biology gives us clues about how this happens. Research in epigenetics shows that childhood stress can actually alter how certain genes operate – especially ones tied to stress hormones, immune health, and the vagus nerve (which governs our ability to calm down). These biological changes don’t just influence one person. They can affect future generations, creating inherited patterns of stress response.

Harvard’s Center on the Developing Child calls it “toxic stress”. That means stress that happens often, without emotional support. This kind of stress impacts areas of the brain responsible for controlling emotions, memory, thinking ahead, and nervous system balance. Instead of wiring us for calm, it wires us for survival – leading to things like hypervigilance, shutdown, people-pleasing, or emotional outbursts.

Kids don’t learn to manage emotions alone. They do it through their caregivers. Co-regulation – when a parent or caregiver is emotionally present – teaches the child that it’s safe to feel, safe to calm down, safe to trust. Without that, the child’s nervous system forms habits that follow into adulthood.

Patterns like fight, flight, freeze, fawn, or dissociation are not personal weaknesses. They’re survival strategies formed during childhood. But once grown, these same strategies may hold people back rather than help them move forward.

There’s good news, though. Neuroplasticity means the nervous system can change. It isn’t stuck. Tools like breathwork, somatic therapy, vagal tone exercises, and guided emotional processing can train the body to feel safe again. Safety doesn’t require perfection – it just needs repetition.

Understanding these early survival patterns helps us respond with compassion to ourselves and others. That’s where true growth starts. It isn’t about blaming the past. It’s about using biology to guide healing in the present. With the right tools and consistent effort, people can move from always surviving to truly thriving.

Megha Suryavanshi is a psychologist from Vietnam. She is also a Komodo dragon enthusiast.