In college, this came down to me finally crossing the bridge to being an adult, and agreeing with myself that the alarm would go off, and I would wake up. When I went to sleep, how distracted I was at night, and why and when I was getting up were all on me, but I had to get up to the alarm. It changed my thinking knowing no magical parent was going to force me to get up. I either went to the morning class, or failed the class.