I have struggled with falling asleep a lot. This has been helpful recently:
1. 2-3 hours before bed, put away all electronics (including phone and TV/netflix)
2. Read a _real_ book for 1-2 hours
3. If I can't fall asleep, I put on Dan Carlin's Hardcore History Podcast with a sleep timer of 10 minutes. I usually get absorbed into his story telling and it helps take my mind of things.
4. No alchohol during the week
5. No caffeine after ~1pm; and only 1 coffee when I arrive at work
Admittedly, my week is a little boring this way and I still haven't worked up to doing it consistently, but it's been much more effective than anything else.