Complain about school!
I hate how physically draining school is. Coming home at 10PM after a "day" of school and being too tired to study (lol) or do anything else. Also I hate spending the day before 3PM with the thought of "I have a one to two hour commute and five hours of lectures ahead of me."
Incidentally, I sometimes hate how emotionally draining my chosen academic path is. (SPOILER)There is only so much rape, murder, and genocide I can read about in one sitting without wanting to cry/puke/sleep.