Those that fear rejections are usually those that've never had to worry about what they want before.
Those that fear failure, similarly, are usually those that've always live with compliments and successes.
We hate to fall; when we were once so good at something, we hate it when life deals us a random, different card. Even though it may not be something difficult to handle and live with, we just can't cope with it. Simply speaking, it's like when you are too used being a billionaire just to find yourself bankrupt one day - which means two things: reflect and rise (again), or deject and die (in dispair).
So next time when you fail, be glad.
It's like doing homework - the more you practice, the more perfect it gets. And the more you will be prepared when dealed with odd-cards to play with.
But that almost always also mean more dislike and lethargy, less willing and energy.
But there's no way out of this. Just look forward, find your motivation and locate your destination, and then, keep moving.
Failures are not fearful, giving up is.
No matter how tough the going gets, move on.
Because the going will get you tough.