In 2005, I was asked to speak at the Mother of Invenvtion awards help annually by the Whirlpool Corporation.  One mother asked, "What is the key to your success?"  My answer echoed Alex's quote.  I have found that the key to success - be it personal or professional - no matter what the goal is - is to never quit.

When I was building my business and ran out of money, I didn't quit.  When I experienced great personal setbacks and the loss of loved ones, I didn't quit.  When some of those around me told me it couldn't be done, I didn't quit.   When I was diagnosed with a rare and dangerous health condition, I didn't quit.  When every indicator pointed to giving up as a wise decision, I didn't quit.  Even when I questioned and began to doubt myself, I didn't quit.  

I believe that never quitting is an example of a very simple universal truth.  The key to getting anywhere it to not stop until you get there.  No excuses, no blame - it is that simple.