A very smart person in this thread said "Life is not like school". 100% agreed.

Here's the salient point: once you leave the relatively cloistered environment of college, and you're out there on your own, you are no longer protected from your own fuckups. If you carry bad habits from college into your post-college life, you can expect to reckon with them, probably sooner rather than later. I'm talking about drugs, I'm talking about drinking, and I'm talking about bad relationships and cutting corners and a hundred other things we've all done. Once you graduate, you can keep doing those things. Sure. No one is going to stop you, just like college. But unlike college, no one is going to catch you when you fall.

This is a difficult lesson to learn, because it sounds like I'm saying "you're on your own", which I'm not. When you're in school, those people and routines and institutions that protect you are actually the things holding you back. Being able to be immature and self-destructive is a prison you don't know you're in because you can't see the bars and because you're having fun there. Graduating and striking out on your own and losing those protections and habits forces you to become vulnerable to the consequences of your own actions, and if you're smart, you learn things about yourself and the world you live in.