Exercise, earplugs, blackout curtains and going to bed 8-9 hours before I have to wake up even if I'm not sleepy.
Also not drinking caffeine later then 10 hours before sleep.
Also not drinking caffeine later then 10 hours before sleep.
• Consistent sleep / wake up schedule
• No meals at least 3 hours before bed
• Same story with sugar as caffeine
• Proper temperature in room
• If you want consistency, sleep in a consistent posture and don't move
• Turn off any electronics 30 mins before bed
• Limit alcohol and other substances like User23 said
Sleep is one of those things that has "obvious" solutions and is one of the easiest things to fix in life assuming no underlying medical problems.
The ONLY other thing "this simple" is exercise and rote memorization.