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Sleep is one of the most natural functions of the human body. No app is required. No certification. No seminar. A newborn does it. An animal in the wild does it. For most of human history, when darkness came, so did rest.
And yet today, sleep has become one of the most common struggles in modern Western life.
This isn’t just something patients have told me. I’ve had to conquer it myself.
There was a time when I could move through an entire day without much anxiety. Productive. Focused. Engaged. Then my head would hit the pillow and something would switch on. Thoughts I hadn’t entertained all afternoon suddenly demanded a hearing. Conversations replayed. Future scenarios were drafted and redrafted. Problems that seemed manageable at noon felt urgent at midnight.
The body was tired. The brain was not.
It makes no sense—until you understand what’s happening beneath the surface.
Sleep is not passive. It is active repair. Hormones recalibrate. Cells restore. Memory consolidates. During deep sleep, the brain increases clearance of metabolic byproducts accumulated during the day. On a cellular level, sleep is renewal. It is as necessary as food and water.
But sleep requires something that the Automatic Brain (AB) does not like: letting your guard down.
The AB is not a survival mechanism in the way we often think. It is a threat, vulnerability, and danger monitor. It scans for what might go wrong. Survival may be a downstream benefit of that monitoring, but its primary job is detection. It is vigilant.
Night, for the AB, can represent vulnerability. You are no longer scanning. You are not solving. You are not performing. You are horizontal, eyes closed, guard lowered. If there were times in childhood when night carried uncertainty or fear, the wiring may be even stronger. The AB does not deal in logic; it deals in association.
Dark once meant exposed. Exposed meant risk.
So when the lights go out, the AB may quietly stand up.
Now is the time to think about everything.
And it does so with urgency. If you don’t solve this now, you’ll regret it. If you don’t plan this conversation, you’ll look foolish. If you don’t revisit that mistake, you’ll repeat it.
The result is subtle fight-or-flight in the dark.
For some, the response is to fight sleep. They try to force it. They tighten their jaw. They check the clock. They run through breathing exercises because they were told it will calm them down. For many, those techniques help. For me, they didn’t. The moment I felt myself beginning to let go, I would get jolted back awake. The effort itself kept the monitor engaged.
Others flee sleep. They reach for the phone. One more scroll. One more distraction from lying still with unprocessed thoughts.
Both responses are driven by the same dynamic: the AB does not trust surrender.
Sleeping difficulties are often worse during heightened stress. That is not accidental. Just like other forms of anxiety, there is usually a perceived danger sitting below the surface. Something feels unresolved. Something feels uncertain. The AB senses vulnerability and stands in the way of the natural process.
There are, of course, physiological contributors. Hormonal shifts as we age can fragment sleep. Cortisol fluctuations can cause early awakenings. Many people wake to use the bathroom and then cannot fall back asleep. These are real. But what often determines whether someone drifts back to sleep or lies awake for hours is not the awakening itself—it is what the AB does with it.
If the thought arises, “I’m awake again. This is terrible. Tomorrow will be ruined,” the monitor has taken control.
I learned that sleep cannot be forced. It can only be allowed.
My technique is simple but intentional, and it is twofold.
First, I visualize my mind as a large whiteboard. Every thought that appears is written across it. Instead of analyzing the thought or wrestling with it, I erase it. Not aggressively. Just steadily. If another thought appears, I erase again. The aim is not to defeat the thought. The aim is blank space.
Second, I imagine a large push broom. I sweep the remaining thoughts—problems, unfinished conversations, unresolved issues—into a pile and push them away. Sometimes I picture them moving off into the distance, over a cliff, into the abyss. The specific image matters less than the act of release.
As I do this, I quietly say to myself, “Allow it to happen.”
Not force it. Not make it happen. Allow it to happen.
That phrase is important. It signals that I am stepping out of engagement with the AB and letting the Mind lead. The Mind is reflective and fair. It does not interpret night as danger. It understands probability. It recognizes that most of what the AB is warning about is not immediate threat but possibility inflated into urgency.
There is usually a subtle shift when the whiteboard clears and the floor is swept. A quiet moment. Not dramatic. Just still.
That is when sleep returns.
Not because I conquered it. Because I stopped standing in its way.
We have made sleep complicated. We track it. Optimize it. Analyze it. There is value in understanding physiology, but at its core, sleep is surrender to safety.
If you find yourself awake in the dark, it may not mean you are broken. It may simply mean your danger monitor is active.
Fear will tell you that if you let go, something will go wrong. That if you stop thinking, you will miss something critical. That if you relax, you will be exposed.
But fear is a liar.
Your body knows how to sleep. It always has.
Sometimes it just needs you to step aside and allow it to happen.
Related: Certainty, Pride, and the Posture That Shapes Our Thinking