Stephen Covey Quotes about Discipline
Self-mastery and self-discipline are the foundation of good relationships with others.
Stephen R. Covey (2016). “The 7 Habits of Highly Effective People: Powerful Lessons in Personal Change Interactive Edition”, p.228, Mango Media Inc.
I define discipline as the ability to make + keep promises and to honor commitments.
Stephen R. Covey (1992). “Principle Centered Leadership”, p.73, Simon and Schuster