As a busker, one thing that does not work is self-consciousness. A busker needs to be working. A busker needs to shed all ego and get down to work. Play your songs, play them well, earn your money, and don't get in people's way.
“Certainly, when I walk into an audition, a lot of people already know who I am.”
“I like to be alone so I can write. But focus can hurt you. I don't want to be some stress casualty in early middle age.”