Who thinks they won't do a good job at doing a startup, but does it anyways? And thus, succeeds? Healthy self-doubt is one thing, but are you supposed to be ri

Who thinks they won't do a good job at doing a startup, but does it anyways? And thus, succeeds? Healthy self-doubt is one thing, but are you supposed to be riding the line between self-doubt and giving up? (if so, I guess I'm on the right track)