Fear is supposed to be that way. Fear is supposed to stop you and cause you to think before you act, look before you go, ask before you touch. We all need a healthy dose of it.
But most fear is unhealthy. It disables in the negative way. And there is no greater debilitating fear than the fear of failure.
Imagine the enormous amount of good that will not been done because of the fear of failure, all the businesses that will not been started, all the inventions and discoveries that will not be made and worst yet, all the many needs that will not be met simply because of the fear of failure.