The most often repeated and least digested business/life/ministry/sports maxim is: You Learn from Failure.  

• Failure is success if we learn from it.  Malcolm S. Forbes
• Failure is not falling down but refusing to get up.  Chinese Proverb
• I have not failed.  I've just found 10,000 ways that won't work.  ~Thomas Edison
• Try again.  Fail again.  Fail better.  ~Samuel Beckett
• Failure is only the opportunity to begin again more intelligently.  ~Henry Ford
• There is no failure.  Only feedback.  ~Robert Allen
• Failure changes for the better, success for the worse.  ~Lucius Annaeus Seneca
• You always pass failure on your way to success.  ~Mickey Roone