1) Confidence is a mask to be put on when needed. It's walking in to the room and pretending I assume that everyone in it is going to like me instead of hating me. It's prentending I don't think I'm just on the verge of fucking everything up beyond all hope of return.
Social confidence - the mask I wear - is a big issue for me, because the more you wear it, the more likely you are to get to walk into a room full of people who like you and want to spend time with you. But the less you can take it off. People perceive you as confident - they assume you can get things done, they assume you'll be ok, they assume you won't freeze up and panic just attempting to make polite conversation...
2) The reason I'm better at wearing the mask than some people I know? I act. I role-play. I'm good at pretending.
3) No. But then I tend to assume no one could be that sort of person all the time just because I know I can't.
4) It's... something that they project. You can feel it. It can lift the mood of a group of people, get things going.
5) Depends on the person. Often, somewhat irritated, I have to admit. I often get a sense of false-modesty.
6) No.
7) As far as I can tell, there isn't one. I've never met anyone who was as confident as they looked...