Discipline is a display of power that shows nothing controls you. If you have the discipline to get on the treadmill, turn away another drink, study and work harder or turn away a last bite of dessert, you gain control of the situation rather than letting the situation control you.
It’s life’s most difficult virtue, but the one that most directly relates to the outcome you want most in this world. Riches, wisdom, health, and even love are directly in your grasp if you can nail down discipline.
It’s the virtue I strive for the hardest. Never perfect. Always can be better, but yet it’s the one I strive for every day.