Toughness is a skill. I don't think we're all born tough…

Toughness has nothing to do with size, physical strength or athleticism. Toughness is A SKILL that can be developed & improved.

— Jay Bilas

“Born Smart. Born Tough. Born FBI”

— Jennifer Lynn Barnes

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

— Glody Kikonga

A cold and searching wind drives away all contagion, and nothing can withstand it but what has a virtue in it, and accordingly, whatever…

— Henry David Thoreau

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

Team chemistry is what really matters, your team chemistry and team toughness.

— Bob Stoops

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

— John Bytheway

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

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

Brains without competitive hearts are rudderless.

— Vince Lombardi

You run the football for toughness. You run the ball to tell your opponent that you're as tough as they are. But you throw…

— Jerry Glanville

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

— William James Moore

Somewhere somebody must have some sense. Men must see that force begets force, hate begets hate, toughness begets toughness. And it is all a…

— Martin Luther King, Jr

Absolutely, you can improve and become better at toughness. It's a talent, but it can be acquired, too. I think of it like building…

— Jim Harbaugh