Why failure is so wonder full ?

Most people are afraid of failure. Some so afraid that don't want to attempt anything that involves the risk of failure. But anybody and everybody who has ever succeeded did it by failing first.
Most of us often choose to have a safe ride in life and we usually follow the general life cycle i.e. taking birth, studying, getting a job, doing whatever we are required to do and leave this earth without being known.
But there were few gems who chose to continue on their path even after failing many a times. One can call them genius today but they were born as normal person and they completely changed the perspective of defining life.
What if they had stopped at the first rejection? The fifth? Or the tenth?
The measure of success can be shown by how many times someone keeps going despite hearing only no.