I realise I've missed out on the part of confidence which goes with knowing you are good at something. Like... for me, that would be playing music in front of large groups of people. I'll sing concerts having skipped all the rehearsals because I have the confidence to know I'll put all the notes in the right place anyway. That's just... acurate knowledge of what you know, and often that's a bluff anyway. Like, if you show up to that concert pretending you know all the notes, and you stand up on stage and look like a professional, people tend to assume you got all the notes right whether you did or not. That's why I think it's always a bluff and not a measure of skill. *shrug*