"The ultimate is not to win, but to reach within the depths of your capabilities and to compete against yourself to the greatest extent possible. When you do that, you have dignity. You have the pride. You can walk about with character and pride no matter in what place you happen to finish." -Billy Mills
Credit to Phedippidations for the quote. He did a podcast on running legend Billy Mills. I have to say, this is one of the truer statements I've heard regarding pushing oneself. It was originally intended for athletics (and I totally agree with it), but it works for a lot of sectors of life. I encourage you to push yourself to safely push yourself to your limits, and never to quit. Because, as it was made popular by the Ironman videos..."You can quit, but nobody cares, and you'll always know."