For as long as I can remember myself I've had trouble falling asleep. I think there might be a genetic component to it because there seems to be a history of insomnia on my mother's side of the family. If you've never had this problem, consider yourself lucky. Even mild insomnia can royally screw with your quality of life. Actually I think that's an understatement considering the incompatibility insomnia can induce with the normal rhythms of society.