If are in college or school of any type your money can't be limitless.
1/. Living expenses
2/. School expenses
3/. Got a couple hundred in reserve for surprises?
4/. You decide what your social life looks like...beer and pizza with classmates, or a girl/woman, or trigger time. Any money not required for 1/2/3 can be considered discretionary.
Don't forget you may have to relocate to a job after graduation...which will also require money.
Played this game...shot IPSC while in school. Lots of meals out of parents fridge.