Change can be very unsettling at times; it can be downright scary, but one of the benefits of change is the fact that you have an opportunity to shape and mold the future you want.
Self-doubt is so powerful, it has the ability to hijack your life. Stop letting other people's success make you think, "He's one in a million" or "That could never happen to me". Because that person was thinking the same thing all along, he just didn't let it get in the way.
Dwelling too much on one's own self is directly at odds with the goal of humility, which is a focus on reality and what is truly good rather than the self.