I'm self-centered. I don't want to be. I do genuinely care about others but I never do a thing without first thinking about how it's going to effect myself. On the other hand I worry entirely too much about what other people think about me. I try too hard to make others like me, and therefore I rarely let people get to know who I really am, rather than just my public persona. And I over-think to say the least. There is usually not a single moment of my day that my brain is not beating something to death inside the walls of my head, and over-analyzing it to the point at which I just want to sleep to stop thinking. Although, I think that how your brain thinks about things is part of what makes you who you are, and it's not something that you can control. So I wouldn't exactly call it a "flaw."