I think they are closely linked and have a direct correlation, mood up = confidence up, mood down=confidence down. At least this is the case for me. I cannot isolate either one and just take it for what it is. I know that if i am in a depression that my confidence is in the toilet. I have come to just expect it and try to fake it when I am down and when I am up i try to just remember it is a false sense of self, too. Mine has not gone away with time, though i would love it if it did. Not sure how helpful that is.