Don’t hit dismiss on your alarm until you have actually gotten out of bed

Sleep-you is a drastically different person, with different priorities, goals, and concerns. Don’t trust them with this sort of decision.

If you’re having trouble with oversleeping because you killed the alarm, then start plugging up your phone on the other end of the room. To then walk back to bed, get back into it, and doze back off will require actual conscious choice, and thus will be much easier to avoid.