I swear get the most obnoxious , awful and loud alarm and put it on the opposite side of your room . You cant ignore it so you have to get up wallk across the room and turn it off by that point your lucid enough to feel guilty about not gettting up .

Putting an alarm in a shoe box under the bed works just as effectively .

Also sleeping with a curtain open generally helps me , I find the light coming in in the morning gives me a cue to wake up .