This quote belongs to Hall of Fame basketball player/coach John Wooden, who was not only well aware that it's OK to regularly make mistakes, but that you're doing something wrong if you don't.
It's easy to expect perfection from ourselves and/or fear the judgment that comes with screwing things up, but even at its worst we learn from those errors. That's not a new concept by any means, but it's one often forgotten. Mistakes are an indicator that you're actually trying to succeed, so without them you're not doing much of anything at all (and probably making yourself much less happy in the process).
John Wooden Quotes [BrainyQuote]