* No soda - I found soda messed with my body chemistry quite a bit, also affecting my sleep patterns. I sleep and feel better without it.
* No caffeine after 12pm - I have most of my caffeine between 6-8 AM, with the occasional cup of coffee before lunch.
* Very little alcohol on work nights - More than two beers/one cocktail, I've found, contributes to a really poor quality sleep for me.
* Wake up between 5-6 AM, reading in bed by 9 PM (sleeping by 10 usually). Getting into a routine helps me set aside the 7-8 hours of sleep I need each night.
* Exercise - I go to a personal trainer 3x a week after work, and do cardio on the off days. This helps get me to sleep at night, since I'll usually be pretty tired after workouts.
* Eliminate stress at work - I found that for a few months, big projects at work were keeping me up at night. I had to consciously stop thinking about work in my personal time, which helped me sleep.