This will work almost every time if you really do it:
Talk to yourself (inside your head) in a sleepy, groggy tone of voice, yawn, etc. It doesn't matter one iota what the content of what your saying is. It's the structure of the tone. Talk sleepy, and you will likely fall asleep very quickly. While your at it, mention to yourself what time in the am you wish to rise, and that you will feel vibrant and energized.
This works, if you really do it.
Another option is to listen binaural tapes or dual-story track tapes. Kelly Holloway for binaural is quite relaxing.
Glouberman has tapes that you listen to with headphone, same voice, but a different story in the left and right tracks. It overloads your conscious thought patterns and cleans out all the crap from your head.
I personally use all of these effectively and have taught others who report great results.
Good luck!