i have to fall asleep to either the sound on the tv or a fan. if i go camping, i need to be near running water or, its almost impossible for me to sleep.
unless i get totally drunk then, i can just pass out.
that being said, when i do fall to sleep while watching/listening to the TV, i set the timer for 90minutes that way i dont wake up at 3am to "BILLY FUCKING MAYES HERE BITCH!!"