Do the one thing you think you cannot do. Fail at it. Try again. Do better the second time. The only people who never tumble are those who never mound the high wire. This is your moment. Own it. Oprah Winfrey
If at first you don't succeed, try, try again. Then quit. There's no point in being a damn fool about it. W. C. Fields
The successful man will profit from his mistakes and try again in a different way. Dale Carnegie
If at first you don't succeed, try, try, try again. Lebanese Proverb
If at first you don't succeed, try, try again. English Proverb
If at first you don't succeed, try, try again. Never say die. Spanish Proverb