Puzzles Pieces That Just Don't Fit Together

Sometimes I feel like I really don't fit with any part of my life. I'm restless and unhappy at home, and I'm mostly happy when I'm at school, but I get this nagging feeling like I'm not where I'm supposed to be. I can't really explain it, I probably sound weird, but I just don't feel like I fit. I don't feel like I'm doing anything, or accomplishing anything. I just feel like I'm going through the motions of all of it.