I have a terrible time falling asleep.
Not much works for me, but when we used to have a TV in our bedroom, and my husband would watch C-SPAN, I would fall asleep. Because it's on TV, I would focus, but it just didn't interest me enough to use any brainpower for it. I'm trying to figure out how to translate that into something that might work for me without a TV.
The other thing that was odd was that while on a cruise, I immediately fell asleep every night. I think it was the rocking boat. (And my husband, who never has trouble falling asleep, was kept awake by the rocking.) I don't know how to replicate that at home...could be dangerous.
I do not like to take medication for my insomnia, but, after reading the other posts, it looks like it works for some people.
Currently, I try to read until I fall asleep, but sometimes I am still up for a long time. Good luck. I hope someone gives you an idea that works!