Let Go of the 8-Hour Rule to Ease Sleep Anxiety

I’ve spent years chasing better sleep. The harder I tried to hit the perfect eight hours, the more anxious I became—and the more I lay awake calculating the cost of every lost minute. Two things finally eased that loop: a reframing from Dr. Merijn van de Laar’s book How to Sleep Like a Caveman, and a simple phrase that steadied my 3 AM mind: “This thought can wait.”

Release the 8-hour rule to reduce sleep anxiety

The headlines are relentless: eight hours or else. For me, they did the opposite of helping. I went to bed tense, woke up tense, and treated sleep like another performance to get right.

That pressure made rest feel like a test I was failing. The insistence on a flawless, continuous block turned natural awakenings into emergencies and left me bracing for disappointment before my head even hit the pillow.

What ancestral sleep patterns reveal—and how they ease pressure

According to Dr. van de Laar, our prehistoric ancestors didn’t force a single, unbroken stretch. They often slept in segments: dozing after dark, waking briefly to tend a fire or sit quietly, then sleeping again until dawn.

Seeing this pattern as normal—rather than problematic—lifted a weight. If earlier humans could thrive without rigid continuity, my 3 AM wake-ups weren’t failures; they were simply part of a human rhythm.

Accepting that made me less reactive in the night. Instead of panicking, I could notice the wakefulness, trust it would pass, and let my body settle again.

How modern cues disrupt natural sleep rhythms—and what to adjust

Life today works against our biological cues. Bright artificial light, late-night screens, constant connectivity, and temperature-controlled rooms muffle the signals that usually nudge us toward rest.

I noticed this most with my phone and TV. Evening scrolling left my mind lit up; reading on an iPad kept me alert in ways a printed book didn’t. Indoor temperatures also blurred the gentle cues of night.

Small changes helped quickly: less screen time before bed, a cooler room, and paper books at night. The adjustments were simple, but the signal to my body was clear.

A simple 3 AM antidote: “This thought can wait”

Middle-of-the-night wakefulness used to trigger spirals—work problems, unresolved decisions, trivial worries that seemed huge in the dark. I once came across a line I can’t trace back now: when the mind starts racing at night, tell yourself, “This thought can wait.”

I tried it skeptically and kept practicing. The phrase acknowledged the worry without engaging it. It offered a gentle boundary: not now, but in the morning.

That small permission changed the tone of my nights. The thoughts still visited, but they no longer took over, and I could drift back to sleep more easily.

Practical ways to try a calmer, ancestral approach tonight

• Minimize screen time: Step away from phones, tablets, and TV at least an hour before bed. Choose quiet activities instead—reading a book, light stretching, or journaling.
• Keep your bedroom cool and dark: Lower the temperature slightly and use blackout curtains or an eye mask to mirror natural darkness and support deeper rest.
• Embrace shorter sleep sessions if needed: Don’t force it when you’re not sleepy. Spend less time awake in bed to build sleep pressure, and allow for wake–sleep cycles if they arise.
• Adopt a calming bedtime ritual: Create a simple routine—herbal tea, meditation, or quiet reading—that signals your body to wind down.

Let go of rigidity to build a steadier relationship with sleep

Learning about segmented, ancestral sleep loosened my grip on the eight-hour ideal. Nighttime awakenings no longer mean I’ve failed; they’re part of a broader rhythm my body understands.

Perfectionism around sleep tends to backfire. Letting go of the rulebook, leaning on the “caveman” perspective, and returning to “This thought can wait” has eased my anxiety and improved my rest.

If you’ve been wrestling with sleep, question the myths that make you tense. A more natural, flexible approach can open the door to nights that feel simpler, steadier, and kinder to your nervous system.