One obstacle to overcoming my Social phobia is a complete lack of ambition. I've wasted a year at college and I still don't have a clue what I want to become. I could care less about the classes I have taken.
Does anyone have any ideas on how to fix this?
To be honest, I don't really think it's fixable. I say this because I was similarly aimless early in college. The college counselor felt that finding a profession I wanted to enter would give me ambition and alleviate my depression, but despite finding the field most suited to my personality and financial needs, I'm not much better. There's no better major I could be pursuing, I'm sure of it, but I'm neither proud of my so-far-so-good grades nor excited about entering the workforce. I just do what I can and go home. Beyond my future paycheck and peace of mind, I don't care.
I think some people are ambitious as a matter of course -- they enjoy and take great pride in their accomplishments. And some of us do what we do out of necessity, or when the rewards are large enough to warrant the effort. If you're not the inherently ambitious type, your best bet is to keep those rewards in mind to keep your willpower up. I like to string myself along by buying myself lunch for every time I study an extra couple hours, or award myself with a new game if I really nail a test. I enjoy these things, and use them as reminders of better things to come.
If you're not the accomplishing type, that's really all you can do. Productive people aren't particularly moral, and they haven't discovered some secret; they just enjoy doing what they do on an intrinsic level, or they find the subsequent prestige too good to pass up. If there's some way to light a fire in one's belly for accomplishment as a goal in and of itself, I don't know it.