If you don’t know why you failed, you are no wiser than when you began.
There’s an old adage that those who refuse to learn from history are doomed to repeat it. So it is with our failures. Unless we learn from our mistakes, we are likely to repeat them until we learn from such experiences and correct our course — or give up and accept temporary defeat as permanent failure. Every setback you encounter in life contains valuable information that, if you study it carefully, will eventually lead you to success. Without adversity, you would never develop wisdom, and without wisdom, success would be short-lived indeed. When you make a mistake, say, “That’s good! I’ve gotten that out of the way. I will never do that again.” You will no doubt make other mistakes, but they won’t bother you nearly as much when you treat them as learning experiences.