A news report from Life Hacker suggests those with sleep difficulties conduct an audit to improve rest.
Examine how you spend your time at night, from when you arrive home up till you go to bed. You may find time you waste on silly things that can be better spent sleeping. You may also find that some activities are too stimulating or stressful, and make it difficult for you to sleep. Even long after you’re done with them, they may keep you up past your bedtime. (If you’re looking at a screen late at night, use Flux to minimize the effects of backlit technology.)