"Need not focus on the mistakes any more than is necessary to learn their lessons." - Warren Buffett

If you make a hundred decisions and ten turn out bad, you could end up obsessing over your mistakes to the point that you neglect the new opportunities and decisions that need to be made.

"We just figure there is so much to look forward to that there is no sense thinking of what we might have done. It just doesn't make any difference. You can only live life forward."