What can help me get to sleep?

schools about to start and i have no idea how im gonna get up in the morning at 5:30 !! I have been staying up every night until 4 or later because i cant get to sleep. I am desperate and i need advice .PLEASE ! PS. i have tried warm milk , and it doesn't seem to work for me. PLEASE I NEED TIPS !!!!!!!

do you have a iphone or itouch because there is a app called deep sleep that makes you fall asleep.

i have the prob 2 and i waz up till 3. i recomend not eating before sleep, getting a good amount of exersise and having not much on your mind What can help me get to sleep?