Meditating/relaxing in bed before sleep I think is pretty important. Just taking 10-30 minutes to completely relax the muscles, stretch everything, forget everything. Pine trees, crickets, water lapping over white sands.

To do it well, I focus on the extremities of the toes and fingers, and give them a really good stretch, then let them relax. Then work inwards. Eventually you'll feel like you're floating, and get a good night's sleep. But I also mean stretch your eyebrows, your jaw etc. Stretch everything possible and let it relax. Its amazing where you can hold tension.