What is happening to me?

I don't know what's happening to me. I feel like I'm really losing a part of myself that, not only did I not realize I still had, but a part of me that is really who I want to be. It really doesn't make a whole lot of sense, but I can feel it. Things around me seem to be falling apart left and right, and I don't see what I did to be the center of all of this.

You know that feeling you get when it's the night before a huge project is due that you completely forgot about, or that feeling that you're forgetting something huge? I feel like I have that nonstop. I feel like I'm living on the edge, and I guess I really am, more or less. I mean, I'm living paycheck to paycheck like most other people, but it's deeper than that. I feel like I'm not even living day by day, sometimes. It's more like I'm living moment to moment. I never know what's going to happen next. What's worse? I feel like I'm losing my ability to read people. Either I'm incredibly far off base with my observations, or I'm dead on, and I'm pretty sure it's the former of the two.

I also figured out that I have no idea what I want. I don't know what I want to do, and I don't know what I want to to be, and I feel like I'm just wasting time right now. I want nothing more than to be doing something meaningful, but I don't feel like I am. I keep second-guessing almost everything. I'm moving toward an IST major, but I don't know if that's even what I want. I like cooking, but I also enjoy astrophysics, and I always thought it would be really awesome to be a radio DJ.

And I keep having the weirdest dreams. I used to never have such vivid dreams, and when I did, it was very rare. But I haven't NOT had a weird vivid dream since spring break, and that was mid-March.

I constantly feel like I'm five seconds from Hulking out.
What's wrong with me?