The first test of a truly great man is his humility. By humility I don't mean doubt of his powers or hesitation in speaking his opinion, but merely an understanding of the relationship of what he can say and what he can do.
Many people believe that humility is the opposite of pride, when, in fact, it is a point of equilibrium. The opposite of pride is actually a lack of self esteem. A humble person is totally different from a person who cannot recognize and appreciate himself as part of this worlds marvels
Mental toughness is many things. It is humility because it behooves all of us to remember that simplicity is the sign of greatness and meekness is the sign of true strength. Mental toughness is spartanism with qualities of sacrifice, self-denial, dedication. It is fearlessness, and it is love.
If thou desire the love of God and man, be humble, for the proud heart, as it loves none but itself, is beloved of none but itself. Humility enforces where neither virtue, nor strength, nor reason can prevail.