Insight into how our survival instincts might be disrupting sleep

Why your brain might be battling you at bedtime, and how to overcome this to find naturally effective ways to settle down for sleep

Quality rest is more than just part of our routine; it’s essential for refreshing and resetting our brain by processing thoughts and feelings. And it’s scientifically proven, with countless studies exploring the importance and impact of sleep over the years, including 2025 research in Sleep Medicine, which found that inadequate sleep might contribute to neurodegeneration.

Interestingly, sleep is not simply a passive state of ‘switching off’ – when we ‘rest’, our brains are actually quite active. Sleep is an essential neurological process that allows the brain to organise information, regulate emotions, and restore balance to both mind and body. However, this natural process can easily become disrupted when the brain enters a state of hypervigilance, most commonly caused by prolonged stress or elevated anxiety levels – which can be all too frequent in modern life.

One of the primary causes of insomnia and poor sleep quality is negative thinking, as explored in 2023 research in the Journal of Anxiety Disorders. While it may seem harmless at first, persistent negative thoughts gradually increase anxiety levels, placing strain on the brain’s ability to regulate itself effectively. Over time, this can lead to a loss of what we might describe as ‘intellectual control’.

Although we each have one brain, humans effectively operate with two distinct modes of thinking. The first is the intellectual, logical, and rational side of the brain, which allows us to analyse situations calmly and make reasoned decisions. The second is more primitive, and vigilant, whose primary function is survival. When anxiety levels rise, the brain automatically shifts control away from the intellectual mind, and into this more primitive mode.

This shift is the same automatic response that would occur if we were faced with a genuine threat or emergency. Imagine encountering a hungry, restless polar bear intent on attacking you. Your brain would instantly prioritise survival, overriding logic, and placing your body on high alert. While this response is invaluable in life-threatening situations, it becomes problematic when constantly triggered by negative thinking, stress, or worry.

When the brain is operating in this heightened state of vigilance, it becomes more negative, obsessive, and constantly alert. As a result, the mind struggles to relax. This makes falling asleep difficult and, even when sleep does occur, the brain often cannot relax deeply enough to process unresolved thoughts, emotions, and feelings.

The processing of emotional material primarily takes place during the dreaming phase of sleep, known as rapid eye movement (REM) sleep. During this, the brain files away experiences, regulates emotional responses, and clears mental ‘backlogs’ accumulated during waking hours. However, REM sleep typically accounts for only around 20% of the overall sleep cycle.

When someone experiences prolonged anxiety or stress, the brain may attempt to overcompensate by increasing its demand for REM processing. Unfortunately, if this demand becomes excessive, the brain will often wake itself up, rather than remain in REM sleep. This is why many people find themselves wide awake at three o’clock in the morning, feeling restless, anxious, and unable to drift back to sleep.

It’s an experience many of us are familiar with: staring at the ceiling, thoughts racing, the body feeling tense, and a growing sense of frustration or despair about being awake. In these moments, the brain is firmly operating from its primitive, vigilant mode. It remains on high alert, because it’s been unable to process the emotional load created by sustained negative thinking.

This is where solution-focused hypnotherapy can support your brain in restoring its essential processes, as hypnosis induces a trance state that closely replicates the REM process that we all need. As a result, one of the first, and most noticeable, benefits clients often report experiencing is a significant improvement in both the quality and length of their sleep, often within the first few weeks.

During trance, the brain is able to process thoughts, feelings, and emotions more effectively, reducing the emotional backlog that fuels anxiety. As this processing takes place, anxiety levels naturally begin to decrease, allowing the brain to gradually shift control away from its primitive, hypervigilant mode, and back toward the calm, rational, and conscious part of the mind, where information is organised and stored within the brain’s vast memory networks.

While we all might resonate with different support and approaches, some find solution-focused hypnotherapy particularly effective because it does as the name suggests: focuses on solutions, rather than problems. It helps clients identify what they want to improve in their lives, and how they would like to feel moving forward. In doing so, the brain is guided away from negative thinking patterns, and toward more positive, constructive pathways. Over time, this reduces anxiety, improves emotional regulation, and restores the brain’s natural ability to relax and sleep peacefully.

What many find is that as sleep quality improves, the mind becomes clearer, emotional resilience increases, and the cycle of anxiety and insomnia is gradually broken – allowing both mind and body to return to a healthier, more balanced state.