“I know there's no real danger. So why can't I ever switch off?”
At a glance
- If you're always nervous or stressed, it's often not your personality. It's your survival system, the fight, flight and freeze response, staying switched on.
- This can happen after one overwhelming experience, or after many stressful ones that were never fully processed. Acute stress slowly becomes chronic stress.
- Your nervous system reacts to what it perceives, not to what you know. That's why you can feel unsafe even when you're safe.
- Thinking alone rarely switches it off. The body needs to feel safe first. Therapy that works with the body and with stored memories, such as somatic work, IFS and EMDR, can help.
Why am I always nervous or stressed? The short answer
If you feel nervous, tense or stressed most of the time, even when nothing is wrong, your nervous system may be stuck in survival mode. Fight, flight and freeze are the body's automatic responses to danger. They're meant to switch on when we're threatened and switch off when the threat has passed. But when an experience, or many of them, has been too much for us to process, the switch can stay on. The result is a body that keeps preparing for danger long after the danger is gone.
Many of the people I see are capable, thoughtful and self-aware. They understand their patterns, sometimes very well. And yet, when someone raises their voice, when an email lands at the wrong moment, or when a situation reminds them of something, their body reacts before they've had time to think. They snap. They freeze. They cry. They avoid. And then they judge themselves for it.
What I want them to know first is this: nothing is wrong with them. Their survival system is doing exactly what it was designed to do.
Fight, flight and freeze: a very clever survival system
Fight, flight and freeze are survival states. They're the body's response to a sense of being unsafe, whether the danger is real or perceived. It's a very clever system, one we want to have, and one that has served us as a species for millions of years. It alerts us to danger and gets us ready to survive.
Researchers describe these reactions as a “defence cascade”: a sequence of automatic responses that unfold depending on how close and how inescapable the danger feels, from alertness, to fight or flight, to freezing, and finally to shutting down.
Usually, once the threat is gone, we're able to regulate ourselves. After a little while, the body returns to baseline, and we go on living our life with no lasting effects.
Why can't I ever switch off?
Some experiences are too intense for our nervous system. They get stored in a way I would call incomplete, and the survival switch stays on.
Sometimes it's one traumatic event we never processed, and something in us is now on high alert all the time. Sometimes it's many stressful or overwhelming experiences, repeated over time, that we didn't know how to process. Little by little, acute stress becomes chronic stress. Researchers have a name for this wear and tear: allostatic load, the cost the body pays when it has to keep adapting to stress for too long. I like to think of it as a load we carry without noticing, until it becomes our default mode.
We end up on high alert all the time, or easily triggered as soon as our nervous system perceives that something similar to the past is happening again. Perceives is the important word here. Our nervous system doesn't ask whether we're actually in danger today. It asks whether this feels like something that hurt us before.
Say that in the past you had a boss who spoke to you in a very harsh tone. Now, every time someone speaks to you harshly, you freeze, or the tears come, automatically. You can't help it. Your thinking brain knows this person is not that boss. Your body doesn't.
Signs your nervous system is stuck in survival mode
These states often show up in quiet, everyday ways.
Fight: always on the defensive. People in fight mode often feel angry or resentful. If they don't act on it, they may have a lot of thoughts of arguing, or even of being physically aggressive. They're more primed to react, more impulsive, less contained, and they may find themselves in conflict with the people around them. Many feel they constantly have to protect themselves, that the world will take advantage of them if they don't keep advocating for themselves.
Flight: always busy, always avoiding. People in flight mode tend to avoid. They avoid conflict, and they avoid thinking about, or acting on, whatever caused them stress. They distract themselves, look for quick relief, keep busy all the time. Anything to not have to feel it.
Freeze: knowing what to do, but unable to do it. People in freeze mode often tell me they know what needs to get done, but they just can't do it. They feel tired, unmotivated, low on energy. They feel disconnected or numb, and they procrastinate a lot. Often they can only act when there's a sense of urgency. They may still function and look completely normal from the outside, but inside, they know they're not.
Shutting down: when even the basics feel impossible. At the far end of freeze, the system shuts down. This is when we can't function anymore: when we sleep all the time, or can't sleep at all, when we can't do the things we used to do, and when getting out of bed becomes genuinely difficult.
Is people pleasing a survival response too?
You may have come across “fawn” as a fourth survival response, often described as people pleasing.
The term comes from a therapist named Pete Walker, who described it from his clinical work with people who had experienced complex trauma. It's a useful word. But fawning is not an automatic biological response that the body produces when it perceives a threat, the way fight, flight and freeze are. I see it as a learned way to protect connection.
Often, we learned early on that saying yes, being agreeable, easygoing or quiet, not being a burden, was easier. And not only easier: it was the safest way to make sure we would still be cared for, loved and attended to. That's not a reflex. That's a strategy, and a very intelligent one for the child who needed it. If this resonates, you may find my article on guilt and shame helpful too.
Why “just relax” doesn't work
This is why “just calm down” so rarely works. These reactions happen faster than thought, in a part of us that doesn't respond to logic. You can understand perfectly why you react the way you do, and still react.
What I see is that the body needs to feel safe first, before the mind can switch off and slowly learn that it's no longer under threat. Safety comes first. Understanding follows.
How therapy helps your nervous system switch off
In our work together, we start by understanding all of this from a scientific point of view. Not as an intellectual exercise, but because it helps people stop judging themselves for reactions they can't seem to control, reactions that have often had a real impact on their lives. So many of my clients have been judging themselves heavily for years.
Then comes the realisation. Clients begin to notice their reactions while they're happening. They learn to step back from them a little, and to practise different ways of creating safety, in the body and in the mind. Depending on what's needed, we use somatic work to help the body settle, IFS to meet the parts of us that learned to protect us, and EMDR to process the experiences that were stored as incomplete.
We learn the tools, the strategies and the resources to finally switch off. And slowly, we build a way of living that allows for regulation.
What you can try when you can't switch off
The next time you notice your body reacting more strongly than the situation calls for:
- Name it, without judgment. “I think I'm in fight”, or “This feels like freeze.” Simply naming it creates a little distance.
- Look around. Slowly let your eyes move around the room and name a few things you can see. This tells your nervous system where you are now, not where you were then.
- Feel your feet. Notice the ground under you, the chair holding you.
- Lengthen your exhale. Breathe out a little longer than you breathe in, a few times. A longer exhale is one of the simplest signals of safety you can send your body.
It won't switch off a lifetime of survival in a moment. But each time you do it, you're teaching your body something new: that right now, you're safe.
When to get support
Feeling constantly nervous or stressed can sometimes have physical causes too, such as thyroid problems, certain medications, too much caffeine or a lack of sleep. If it's new or getting worse, it's worth checking with your doctor first.
If your body seems stuck in survival mode, and it's affecting your sleep, your work, your relationships or your enjoyment of life, therapy can help. You don't need a big trauma to deserve support. Many people I work with tell me “nothing bad happened to me”, and yet their nervous system has been carrying a heavy load for years. You can read more in my articles on anxiety you can't explain and burnout.
Sources
- Kozlowska, K., Walker, P., McLean, L., Carrive, P. (2015). Fear and the Defense Cascade: Clinical Implications and Management. Harvard Review of Psychiatry.
- McEwen, B. S. (1998). Protective and damaging effects of stress mediators. New England Journal of Medicine.
- Walker, P. (2013). Complex PTSD: From Surviving to Thriving.