You spent 40000 a year to get a jazz degree? Did you not -- didn't anyone tell you this wasn't the best idea? :(

Things to add about thread; couldn't agree more that 3/4 of college is much worse than either no college or complete college. As the former isn't an option anymore, you should finish.

Regarding the Peace Corps, what sort of loans do you have? Deferred interest to a certain income level? Because the Corps can help you out there. Give you some time to figure out what you're wanting to do, while not accruing stupid amounts of interest. And they pay you a lump sum when you leave. So if you're willing to toss a few years toward going somewhere interesting, think of it as an automatic reduction of debt.

Life advice: don't quit because of a bout of temporary depression; either you'll regret it later or you won't but if there's even a chance that you'll regret it ... don't do it. Take a year off instead, perhaps? If your program allows that. You're already better off than almost everyone in the world in that you have a job and a further opportunity for future employment. Don't throw it away.