Mental toughness is essential to success.

Mental toughness is to physical as four is to one.

— Bobby Knight

Curiosity, rationalization, and laziness are no match against courage, self-control, and mental toughness.

— John Bytheway

Mental Toughness: The ability to consistently perform toward the upper range of your talent and skill regardless of the competitive circumstances.

— James E. Loehr

Mental toughness is a state of mind - you could call it 'character in action.'

— Vince Lombardi

Mental toughness is many things. It is humility because it behooves all of us to remember that simplicity is the sign of greatness and…

— Vince Lombardi

Brains without competitive hearts are rudderless.

— Vince Lombardi

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…

— Vince Lombardi

To achieve success, whatever the job we have, we must pay a price

— Vince Lombardi

Mental toughness is spartanism with qualities of sacrifice, self-denial, dedication. It is fearlessness, and it is love.

— Vince Lombardi

Mental toughness is Spartanism, with all its qualities of self-denial, sacrifice, dedication, fearlessness, and love.

— Vince Lombardi

If you're lucky enough to find a guy with a lot of head and a lot of heart, he's never going to come off…

— Vince Lombardi

“Mental toughness isn’t about how you feel, it’s about what you do despite how you feel.”

— Glody Kikonga

Mental toughness must be developed before you start fighting because you don't want to be that guy who quits in the ring.

— Forrest Griffin

I think we've bounced back and really been resilient. Even after a bad period, we take over and we seem like we're on a…

— Mike Fisher

“To succeed you must do the work. To do the work takes character. To keep doing it takes mental toughness.”

— William James Moore