I'll second that. In my anecdotal and limited experience, the outliers in successful entrepreneurship are the ones that project vulnerability/self-doubt, while the outliers in successful research are the ones that project a lack of self-doubt and create reality distortion fields around their work. The best of both seem to have self-confidence in their ability to succeed, and successful researchers seem confident that problems can be solved, and that they can solve them, but that seems to come with an embrace of uncertainty and an allowance for self doubt.