> Everyone who succeeds in business believes that they can do it.
No, not at all. For example Larry Page offered to sell Google for 1 million dollars, he didn't believe he would succeed. Yet he went on to create one of the most valuable companies on earth. Being modest does not prevent you from succeeding.
Because he wanted to finish his PhD. At that time Google was just a cute research project. The engineering behemoth that became Google came after, and Page might have done that anyway after graduation.
