I am the same way. I have trouble falling asleep (will toss and turn for 45 minutes to 2 hours), so I'm loathe to wake up before I absolutely have to, because once I'm asleep, I want to stay that way. As a result, I just schedule my day so that I work 8 hours, then do everything else. It has its downsides, but its better than everything else I've tried.
