November’s Health magazine has a few ideas for getting better sleep:

Don’t take naps
Don’t sleep longer on the weekends
Don’t smoke or drink alcohol before bed
Avoid exercising within 2 hours of bed time
Try to go to bed and wake up at the same time each day
Turn alarm clock away from you so you don’t look at it in the middle of the night
If you can’t fall asleep after 20-30 minutes get up and do something else (I like journaling or reading fiction)
Don’t eat within 2-3 hours of bedtime