I've always just done it. I know I've set my alarm for a time that gives me the most sleep time I can get, while not having to rush around to get ready. So when the alarm goes off I open my eyes, take a deep breath, and get outta bed.

These days my biggest impetus is the husband - he seems pretty incapable of getting up himself. I can lay there and get angry at him not getting outta bed, or I can get up and make his lunch, cos I sure can't go back to sleep with all his fricken alarms going off.