If you're running businesses anywhere in the world, people who really do well are the people who have mental toughness.

Mental toughness is to physical as four is to one.

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.’

The Special Ops community has always been about mental toughness.

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

I believe in my ability and my mental toughness.