“Even if you fail, at least you had the balls to try.”
“Whether you decision is good or bad at least you had the balls to make one.”
“You must accept that you might fail; then, if you do your best and still don't win, at least you can be satisfied that you've tried.”
“It doesn't matter if you try and try and try again, and fail. It does matter if you try and fail, and fail to try again.”
“If you believe something will make the world better, then it's always worth a try, even if you fail.”
“Pursue something so important that even if you fail, the world is better off with you having tried.”