Nature makes you forget your mistakes and remember others mistakes. A foolish person is the one who finds mistakes in others but ignores his own mistakes. We need to learn from others mistake. We need to learn to forget our mistakes. A straw bends in the direction of the wind.
Every straw has a purpose in life.
It is important to understand which direction does the wind takes. Everything, however insignificant it appears to be, can be useful in its own way. Anything can help us to show which way the wind is blowing. Acquiring knowledge is as important as applying that knowledge. Knowledge is more important than finding a key to a treasure.