I would never have forgiven myself if I hadn't done a doctorate degree. It turned out that I wasn't a star, I didn't produce the research that would put me on to a tenure-track position with ease. But I don't think there was any way I would have found my limitations without doing it, without seeing how much smarter some people were - I would always have been left wondering what could have been. Now, I have come to terms with it, and moved on.