I did not used to have this problem, but slowly and surely over the past ten year (post kids), I have had a hard time sleeping. My son, who has been a notoriously bad sleeper since day one, says he "just doesn't want to say good bye to the day". I think this is my problem too. I stay awake when others sleep to visit with myself. Sometimes, I over stay my welcome and now I am trying to learn how to make a graceful exit from today so I can be better overall tomorrow. Tomorrow, the day that I will have trouble saying good bye to after today.