Best Sleep Supporting Strategies: Positive Psychology and Sleep

I recently researched the links between positive psychology and sleep.

Having lectured about sleep for years, I’m well versed in the physiology, sleep rituals, hygiene and compounds like magnesium which assist deeper more restful sleep.

There’s another strong link though the link between purpose and mindfulness and rumination, wakefulness and the like.

This is the unifying principle.

All sleep disruption fits into three buckets:

Physiology not settled. Emotions not integrated. Meaning not contained.

And the order matters.

Sleep is a bottom-up biological event. It requires parasympathetic dominance, circadian alignment, and reduced threat signalling: these are crucial sleep supporting strategies. 

If physiology is unstable — elevated sympathetic tone, circadian mismatch, inflammation — no amount of mindset work will override that.

So, we fix physiology first: Light timing. Breathing. Nutrition. Consistent wake time. Reduce arousal. 

Then we move to emotional integration.

REM sleep is where emotional memory is processed. If emotions are suppressed or looping, the system stays activated.

Containment practices help here — journaling, worry windows, closing loops.

But there’s a third bucket that’s often overlooked.

Meaning.

When someone oversleeps yet feels tired, or lies awake at night with existential restlessness, the driver is sometimes not sleep — it’s direction.

Purpose — what the Japanese call ikigai — regulates dopaminergic motivation pathways.

When there is forward pull, energy increases.

This isn’t motivational fluff.

Dopamine is tied to goal-directed behaviour and reward prediction.

When meaningful challenge returns, circadian amplitude strengthens, daytime activation improves, and sleep pressure builds more naturally.

So, the sequence is:

Bottom-up physiology. Then emotional integration. Then meaning and direction.

Sleep improves when the system feels safe —physiologically, emotionally, and existentially.
It’s rarely about hacks.
It’s about safety signals.

What “Closed Loops” Actually Refers To

It comes from:

Zeigarnik effect (unfinished tasks stay cognitively active)

Cognitive arousal models of insomnia (Harvey, 2002)

Goal systems theory (unresolved goals maintain activation)

An “open loop” is:
An unfinished task
An unresolved conversation
An unexpressed emotion
An unscheduled worry

The brain keeps these active because they signal incompletion.

Sleep requires deactivation.

So “closing loops” means:

Writing the task down
Scheduling the concern
Having the conversation
Expressing the emotion

Gratitude as a Sleep Supporting Strategy

Gratitude works best when:

Rumination is emotional, not logistical

There is regret, self-criticism, or shame tone

The nervous system is hypervigilant

There’s negative attentional bias

The person needs emotional regulation more than cognitive containment

It is less effective when:
The mind is planning tomorrow
Tasks feel incomplete
The anxiety is operational

“If the brain is solving, contain it. If the brain is judging, soften it.”

“Today was enough.” works because it directly counters one of the biggest drivers of night-time rumination:

The brain’s unfinished-self narrative.

At night, especially during REM-heavy periods, the mind scans for:
What wasn’t completed
Where you fell short
What still needs improving
Social or performance gaps

If your identity is achievement-oriented (which most high performers are), the brain keeps the “improvement loop” open.

That sentence functions as:

1️⃣ A cognitive closure signal
It tells the nervous system:
No further optimisation required tonight.

2️⃣ A perfectionism interrupt
Sleep is incompatible with self-evaluation.
You cannot rest and assess at the same time.

3️⃣ A safety cue
The brain sleeps when it detects:
Physical safety
Social safety
Status safety

“Enough” signals status safety — you are not under threat of inadequacy.

Why it helps physiologically:
Perceived inadequacy → subtle cortisol activation.
Self-acceptance → parasympathetic activation.
Even small shifts matter before sleep.

Important nuance

For some people, “Today was enough” feels too absolute.

Alternatives that land better:

“I did what I could with the energy I had.”
“Progress, not perfection.”
“Nothing more is required of me tonight.”
“The rest can wait.”

People often ask — which works better before bed: a to-do list or gratitude?

The answer is: it depends on the type of rumination.
If the mind is looping around planning — ‘Don’t forget that.’ ‘What time is that meeting?’ ‘I need to sort this.’

That’s cognitive incompleteness.
In that case, a specific to-do list works best. It creates containment. It reduces the Zeigarnik effect — unfinished task tension. It tells the brain: this is handled.

But if the mind is looping emotionally — Regret. Self-criticism. Performance replay. Tone-based rumination.

That’s where gratitude is better.

Because gratitude shifts emotional valence.

It reduces negative repetitive thinking. It activates parasympathetic tone. It signals safety, not threat.

If it’s general anxiety — combine both.

And if it’s performance pressure —Contain first. Then gratitude second.
One important nuance:

If someone is highly stressed or burned out, forced gratitude can backfire. It can feel invalidating.

In those cases, start with containment — worry list first —

Then move toward neutral appreciation, not forced positivity.

The key question isn’t ‘Which tool is best?’ It’s ‘What kind of rumination is happening?’

1–2 Minute Talk Track

This is one of the most immediately effective sleep interventions for high performers.

Scullin et al., 2018 showed that people who wrote a specific to-do list for the next day fell asleep significantly faster than those who wrote about completed tasks.

And here’s the interesting part —

The more detailed the list, the faster they fell asleep.

Why?

Because the brain stays online when it detects:
Incomplete tasks
Uncontained responsibility
Ambiguity about tomorrow

That’s the Zeigarnik effect — unfinished tasks create cognitive tension.
If the brain thinks something might be forgotten, it keeps rehearsing it.

Writing a task list externalises the load.

It reduces working memory activation.

And it signals: ‘This is captured. You don’t need to hold it.’

For highly conscientious athletes, this is often more powerful than gratitude.

Sleep requires safety.
For some players, safety means emotional safety.
For others, it means operational control.”

⚽ 30-Second Player Exercise (Dressing Room / Hotel)
“Before bed tonight:

Write down:
Three things you need to do tomorrow

Be specific — times, actions
Example: 9:30 – mobility 15 mins

’‘Protein shake post-breakfast”

’‘Review clips 20 mins”

Then close the notebook.
That’s it.
You’ve told your brain: It’s handled.”

30-Second Guided Gratitude Reset
“Let’s try this quickly.

Close your eyes, if you’re comfortable.

Take one slow breath in through your nose…
and a slow breath out.

Now bring to mind three specific things from today — small is fine.

Not general things like ‘my family’ — but specific moments.
A conversation.
A meal.
A win.
A quiet moment.
For each one, spend just a few seconds noticing:
Why did that matter?
What did it give you?
What did it signal about your life?
Now take one more slow breath.
That shift you just felt — even if subtle — is your nervous system moving toward safety.”

“By recalling specific positive experiences, you reduce threat scanning and interrupt rumination loops — which is exactly what the brain needs before sleep.”

Neuroscience

“Gratitude before bed isn’t just psychological — it’s neurobiological.

Sleep onset requires a shift from sympathetic dominance to parasympathetic tone. It also requires reduced activity in threat-detection and rumination networks.

What keeps people awake isn’t stimulation — it’s cognitive hyperarousal.

Gratitude appears to modulate this in several ways.

First, it reduces negative repetitive thinking — which is strongly associated with Default Mode Network overactivity.

Second, studies suggest gratitude practices increase parasympathetic activity — reflected in improved heart rate variability — indicating a shift toward vagal dominance.

Third, gratitude shifts attentional bias away from threat processing and toward safety cues. From a predictive processing perspective, it updates the brain’s model of the environment from ‘potential threat’ to ‘relative safety.’

And the brain will not enter sleep if it detects threat.

So, when someone journals three things they’re genuinely grateful for, they’re not just being positive — they are down-regulating amygdala-driven vigilance and dampening cortical rumination loops.

In simple terms:

Sleep requires safety.

Gratitude signals safety.

Brush up on these sleep supporting strategies and you'll find it makes a world of difference.  

Order your Amino Man R5’s and learn to chill.