Try listening to podcasts. It completely cured my inability to get to sleep. In fact, there are podcasts aimed directly at people like you (and me): http://www.sleepwithmepodcast.com/

Some other 'sleep favourites' of mine would be Skeptoid, Lore, Dan Carlin's Hardcore History, 99% invisible. Give it a try. I use the Stitcher app and set the timer to turn off streaming at the end of an episode. I'm usually asleep within 10-15 minutes or listening.

Edit: Also try f.lux on your computer and Twilight on your phone. They work for me, but I'm more than willing to accept that the effects my be purely placebo.