I wrote [1] about my tip for falling sleep: Daydream. I now coach my own kids to do the same and it works. Essentially do not think about things that has happened; It just gets you annoyed with regrets that can not be changed. Do not think about the future; You will get excited, anxious, annoyed and too worked up to sleep. Also covers sports, politics, relationship, technology etc. Think about things that do not affe…
The only problem was that sometimes the daydreams would come on their own, and sometimes memories would come instead.
I read somewhere, maybe here, about inventing situations...one in particular was being dropped onto an island with nothing...and going from there. What do you see? What do you do first? Are there other people? Animals? I use that one quite often!