First, seriously, go see a therapist before you make any decisions. The fact that this is happening during your freshman year is disgustingly normal - everybody goes through a period of adjustment at this point in their lives, but it's much harder for some (particularly kids who have parents with big expectations).

Second, you'll survive and probably do just fine if you drop out and self-study. Having said that, an ivy league education opens doors. I dropped out my senior year. I'm doing fine financially, but I'm certain that I could have done much more interesting things if I'd stuck it out.

Remember, your education is for you.