Sleepless Nights

I'm going golfing with my Dad tomorrow morning. This means I probably won't sleep tonight cause I'm too excited. I actually happens to me a lot. If I play hockey the next day, if I'm going skimming, going to a church service I'm looking forward to or if I'm super excited about something coming up. Some people lose sleep when they are nervous, I lose sleep when I'm excited. Is there anything that makes you lose sleep?