wake up when my alarm clock goes off

I was pretty good about this last semester when I didn’t have to get up until 9. I was pretty good about this at the beginning of this semester when I had to get up at 8.
Now I reverted to my nocturnal tendencies, so it’s getting more and more difficult. Especially on days when statistics is my first class.
Grar.

... I will be motivated to get up on time by my sister. She spends at least half an hour in the bathroom each morning and gets in mere seconds before I reach the door.

That’s it. This is going to the top of my list. During the next week I will set my alarm for 7 am and get out of bed the minute it goes off. The few sporadic times I’ve done this it made me feel more awake during the day so now it’s becoming habit.