As I mention in my manifesto, The Way of The Productivityist, you shouldn't fight your body clock. You need to listen to your mind and body and drive yourself to do more when it works for you. Don't drive yourself insane trying to do anything that doesn't. This exercise should help set you up to figure out what your body clock is trying to tell you. Here's the exercise:

1. Over the next 7 days, make note of when you wake up and when you go to bed.
2. Review your history and honestly describe yourself as one of the following: an early riser (regularly up and at 'em before 7 a.m.) or a night owl (regularly up and at 'em past 12 a.m.). Make a note of it in the space provided.
3. Now that you know what category you fit into (and if you fit into both, then you need to commit to one or the other-there is no middle ground here) and commit to sticking to those times for 30 days. This way you will build a consistent sleeping and waking habit that automates the process over the long haul.