What's the most effective at helping you sleep at night?

Sleep mask covering my eyes. My chambers may be flooded with light to chase away the ghouls of darkness, yet not a hint of light will reach my vision to disturb my slumber.

Also the tightness feels kinda comforting, and I've started to associate it with good sleep and fall asleep faster now because of it

Ps. And no energy drink, coffee or caffeinated or sugary soda past 16.