Sleeping problems

I just woke up about an hour ago and had lunch and i didnt go to bed until like 4 in the mornin and tonight i am going to bed at 8 tonight. I cant br staying up that late anymore i just need to learn that i need to go to bed at around 8 or 9 o'clock. Anybody know how to get yourself to go to bed early and not to stay up late. i need a lot of help. i have a really bad sleeping problem. HELP ME SOMEBODY!!!!!!!!