I've had problems sleeping before. I found something that helped, and it's going to sound weird. Go on to youtube and look up bedtime meditations. There is one on there that's about forty minutes that the guy talks and you focus soley on his voice and imagine what he tells you to, it knocks me out everytime. Another thing that really helped, was before that meditation, I did another meditation to just clear my mind before listening to the other. When you're focusing on the voices and sounds, you're not thinking of your problems and it helps you relax, clear your mind and fall asleep. Good luck