Something that's helped me, and you wouldn't believe it actually can, is rest and relaxation music. Well, it's not really music, basically it's a calm voiced individual guiding you to relaxation to the sound of soft and calming background music (or noises). You focus your energy on relaxing one part of your body at a time, until it feels like you're floating. Not even kidding, it's great. It's been too long since I've used it, so I can't give you any specific names. Do a search on itunes, or even google. Buy one with good reviews.

Basically you become so relaxed that you sleep, and well. Do this a few times a week when you're wound up. Or do it every night.