Not too long ago I had a session with my therapist where he went over some readily observable aspects of me. The bottom line is that I put a wall up to keep people away. He said I dress too dark, I wear my prescription shades too often (never indoors/at night though, haha) and that even my car screams f- off, apparently. I told him that I'm a big dude and that I would look strange dressed in bright colors and driving a cutesy bubble car. The other thing is that I don't enjoy being around people so I sort of figure why would I want to change it? It's so hard to alter these things when you feel they're an integral part of who you are. I do always keep good posture when I'm out and about though, and I smile at people quite often, so that helps. Still, I feel I'm not very approachable in general and I do notice that people never accost me on the street or ask me for anything. I'm sort of divided on whether that's a good thing or not. On the one hand, it's a fairly lonely setup, but at least nobody gives me a hard time.
In any case, I do find that I'm very stable mood-wise and that I'm not really negative. In fact, I would say I'm fairly ongoingly cheerful and content in my own way. I just seem to want to keep the public at a safe distance for some reason.