Definitely agree that our way of thinking of sleep plays a critical role in how we sleep, i.e. "To fall asleep naturally, as opposed to just crashing into sleep when our wings melt, or knocking ourselves out with alcohol or drugs, we must be willing to do two things. We need to lose our mind – to surrender our waking sense of self. And we need to invoke sleep" from this article entitled "Falling for sleep:
When wakefulness is seen as the main event, no wonder so many have trouble sleeping. Can we rekindle the joy of slumber?" on Aeon (https://aeon.co/essays/the-cure-for-insomnia-is-to-fall-in-l...).