The reality is that failure is a part and the path to success and happiness. The ability to recover from the pitfalls of failure is the most important skill in life.
When you fail, it's either you work hard in hope of never failing again or you stop trying in hope of avoiding failure completely. Fear is good. Fear shows that you're alive and that you're sane. But when you become overcome by fear and you become afraid you are at the mercy of your challenges and obstacles.