Sleep? What Sleep?!

Ever have one of those nights where you know that you need sleep to get through the next day, yet, you stare at your ceiling, wondering what you are going to do tomorrow, when you need sleep to function through the day you are thinking about? I go through it every night and I figure that if I lose an hour and a half a night due to restlessness, I lose 20 days of sleep in a year. Funny how I am writing this when I should be sleeping!