Michael Jordan in a famous Nike Air Jordan ad, speaking about failure leading to success:
I've missed more than 9000 shots in my career. I've lost almost 300 games. 26 times, I've been trusted to take the game winning shot and missed. I've failed over and over and over again in my life. And that is why I succeed. That's a great principle which can be applied to any discipline, including fighting.
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failure leading to success.