How can I be depressed? What should I do?

I know I'm depressed, and I know it's because I feel completely alienated in the materialistic, non-intellectual, and mindlessly conformist environment of suburban high school (obviously this a generalization, but I know it's true in that sense). I'm a staunch individualist (think like Max Stirner), and I think that I operate on a different intellectual level than many of my peers. I'm not saying I'm better or worse than them, it just that I'm more interested in the implications of idealism than pep rallies or shopping. That part (alienation) I can understand. But I know that a much bigger role is played by my self-hatred and my (IMO) meaningless existence. Because of this difference, I've only had one relationship that never really got anywhere, which has only served to make me cynical and bitter when I see girls I like. When I say meaningless, I mean it in the existential sense, that there's no meaning I've given to my life, that I'm devoid of passion. I have the hardest time seeing any point in waking up every morning, wasting the supposed "best years of my life" doing the same boring, pointless things I do everyday in school. I want to strike out against this, live life to the fullest and figure out who I really am. But I don't, I never do. I'm the "good kid"; I follow all the rules, and I do my job. I hate myself for that, my disgusting inaction. I don't trust myself to do things right, I forget important things far too often. I just generally don't have any faith in myself, but it doesn't make any sense! I'm not ugly (at least I don't think I am), I didn't have a traumatic childhood, my parents love me (even if I can't relate to them, or really any one else I know), and I do well in school. I've thought about dying, but I wouldn't consider myself suicidal. I think it's more likely that I'd snap and do something crazy and hedonistic instead. Any ideas? What should I do?