I would suggest a very loud and annoying alarm clock. And make sure you have to actually get up to turn it off. Loud bells are good. Place it on a dresser far enough away, so you have to physically go to it to turn it off. Then stay up, don't go lay back down. Maybe a bowl with cold water to sprinkle in your face will jolt you awake. Hope this helps.

Sincerely,

Sardean