Self-respect is the fruit of discipline; the sense of dignity grows with the ability to say no to oneself.
The first and best victory is to conquer self.
The only discipline that lasts is self-discipline.
You can never conquer the mountain. You can only conquer yourself.
The individual who wants to reach the top in business must appreciate the might and force of habit. He must be quick to break those habits that can break him—and hasten to adopt those practices that will become the habits that help him achieve the success he desires.
A man without decision of character can never be said to belong to himself... He belongs to whatever can make captive of him.
Everybody starts at the top, and then has the problem of staying there. Lasting accomplishment, however, is still achieved through a long, slow climb and self-discipline.
I think the guys who are really controlling their emotions ... are going to win.
We are what we repeatedly do, excellence then is not an act, but a habit.
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.