This topic makes me think about a former and now deceased husband who liked the phrase, if you walk like a duck, talk like a duck, then you are a duck. He was a seminar speaker, one of the early pioneers in real estate. His focus was turning ordinary people into rockstars or at least making these agents believe they could become a rockstar. He taught them a way to gain confidence by "faking it until they make it." Not a concept I truly endorse but it worked for a handful.
You know what else can build confidence in real estate? Closing a shitload of transactions.
Maybe the reason I have difficulty wrapping my head about it is because I was born with confidence. No recollection of working to develop it. It was just there. You can read more in my personal blog today about those thoughts at this link: Do You Want to Hire a Confident Agent?