“The battle for self-discipline may leave you a bit bruised and battered but always a better person. Self-discipline is a rigorous process at best; too many of us want it to be effortless and painless. Should temporary setbacks afflict us, a very significant part of our struggle for self-discipline is the determination and the courage to try again....Eternal life in the kingdom of our Father is your goal, and self-discipline will surely be required if you are to achieve it.”  - Thomas S. Monson

“That discipline which corrects the eagerness of worldly passions, which fortifies the heart with virtuous principles, which enlightens the mind with useful knowledge, and furnishes to it matter of enjoyment from within itself, is of more consequence to real felicity than all the provisions which we can make of the goods of fortune.” – Robert Bridges