This goes against reality. When you fail, what do you think? "I'm a failure, I'm worthless, I want to crawl in a cave a die." Right? How do you learn anything that way?
No, my friends, it's easier to learn when you succeed. Because then you're all "I'm great! I rock! Look at me, Ma, top o' the world, Ma! I will always succeed and nothing bad will ever happen to me!" That puts you in a much better frame of mind for self-reflection and learning. This is also why cokeheads are usually successful people.
Succeed succeed, succeed, and soon you'll have success!