Have a wind down period in the evening. Monitors and TV screens seem to activate my brain and I have trouble falling asleep if I use them late into the evening. Shut off every monitor at least 10 hours before you want to wake up. Relax in a warm bath for 30 minutes and then perhaps read or write down your thoughts in a journal.

That said, not everyone is a morning person. If you feel better being a nightowl, just try to adjust your life to it as much as possible.