I have sleep problems too. This is what I do:
-Hot bath about an hour or so before
-Read a book afterwards for a while
-Have a hot drink. Milky ones are best
-When you do go to sleep try breathing deeply i.e breathe in through your nose and out of your mouth
-Like Patrick said, noises/ambiance you find soothing always help to go to sleep: if you have an iPod Touch, buy the Ambiance app, they have more sounds than I could count for you to listen to on there
-If all else fails, try hypnosisdownloads.com, my Dad has some Mp3's from there which help aid you to get to sleep. They do cost money but they are like the same price as something off iTunes.
Hope this helps!
