I've observed that if ...

I've observed that if individuals who prevail in a highly competitive environment have any one thing in common besides success, it is failure—and their ability to overcome it.
 Bill Walsh

Quotes from the same author

Innovation involves anticipation. It is having a broad base of knowledge on your subject and an ability to see where the end game is headed. Use all your knowledge to get their first. Set the trend and make the competition counter you
 Bill Walsh
To a winner, complacency and overconfidence can be destructive. To losers, desperation and despondency are just as harmful.
 Bill Walsh
Consistent motivation usually comes from a consuming desire to be able to perform at your best under pressure, namely, the pressure produced by tough competition. If a player needed me to light a fire under him by turning the other team into a demon, he was lacking something I couldn't give him.
 Bill Walsh
The ability to help the people around me self-actualize their goals underlines the single aspect of my abilities and the label that I value most—teacher.
 Bill Walsh
We have a lot of players in their first year. Some of them are also in their last year.
 Bill Walsh