College is a time of self-discovery, independence and unlimited access to frozen yogurt. It's a great experience, full of cute boys, endless freedoms and gross dining hall food. But college can also be a majorly trying time, full of both stupid and smart mistakes. In honor of Back to School Week, keep clicking to learn some of the valuable lessons we learned while in ye olde college. And tell us: What do you know now that you wish you'd known then?