Absolutely -- now I am much more optimistic, and emotionally much better centered. Over time I have learned that I make my own happiness, so it has stopped bothering me when I can't find it in people, places or things around me as I kind of expected I would when I was younger. In high school I was in a very bad mentally and emotionally, up to and including having to be hospitalized for clinical depression and for acting out in anger at the circumstances in which I found myself. At the time I didn't know any other way to deal with things, though since then I have learned coping skills that allow me to be much less vulnerable to the highs and lows of life outside of myself.
Overall, the result has been that I tend to be more cheerful and outgoing than I was in high school, and I'm told that I'm easy to talk to and make people laugh. I'm comfortable in my own weirdness and express myself in ways that I would not have allowed then because they do make me stand out, and in school I wanted nothing more than to melt into the woodwork. My feeling of self-worth was practically non-existent then, but today it's something that keeps me moving from one idea or circumstance to the next without ever losing hope of reaching my goals, and without ever feeling that I don't deserve them. I used to hate myself when I was in high school, but I really like me now and enjoy my company.