Fear is a crippler. The fear of failure, and yes, even the fear of success, keeps many people from achieving all of which they are capable. The bondage of fear prevents people from having a greater impact, from accomplishing more, from being their best.
The most successful people you know have fears. The difference is that they don’t let their fears stop them. They push on in spite of their fear. Where others are stymied or stopped by their fears, successful people acknowledge their fears, but “do it anyway!”