These are all from the great Vince Lombardi:

"There's only one way to succeed in anything, and that is to give it everything. I do, and I demand that my players do."

"If you aren't fired with enthusiasm, you'll be fired with enthusiasm."

"Mental toughness is essential to success."

"You never win a game unless you beat the guy in front of you. The score on the board doesn't mean a thing. That's for the fans. You've got to win the war with the man in front of you. You've got to get your man."

"Success is like anything worthwhile. It has a price. You have to pay the price to win and you have to pay the price to get to the point where success is possible. Most important, you must pay the price to stay there."

"The harder you work, the harder it is to surrender."
"If you'll not settle for anything less than your best, you will be amazed at what you can accomplish in your lives.

"It's not whether you get knocked down, it's whether you get up."

"The good Lord gave you a body that can stand most anything. It's your mind you have to convince."

"Mental toughness is many things and rather difficult to explain. Its qualities are sacrifice and self-denial. Also, most importantly, it is combined with a perfectly disciplined will that refuses to give in. It's a state of mind-you could call it character in action."

"Once you learn to quit, it becomes a habit."

"Winning is not everything--but making effort to win is."

"It's easy to have faith in yourself and have discipline when you're a winner, when you're number one. What you've got to have is faith and discipline when you're not yet a winner."

"I firmly believe that any man's finest hour, the greatest fulfillment of all that he holds dear, is the moment when he has worked his heart out in a good cause and lies exhausted on the field of battle-victorious."

And my personal favorite:

"Winning is not a sometime thing: it's an all the time thing. You don't win once in a while; you don't do the right thing once in a while; you do them right all the time. Winning is a habit. Unfortunately, so is losing."