My biggest problem is that I'm exhausted at 6pm but by 9:30 I get a second wind that lasts until midnight or so. At that point, I crash and drag myself to bed. Even when I try to get to bed early, I'll often toss and turn for hours until I get to sleep at "normal time."

On the bright side, staying up until 2am gives me plenty of time to write my second novel. (I'm closing in on 44,000 words now!)