Self-control is the ability ...

Self-control is the ability to restrain a laugh at the wrong place.
Self-control is the ability to restrain a laugh at the wrong place.

More phrases

Who sows virtue reaps honor.
He who conquers himself is the mightiest warrior.
The fixed determination to have acquired the warrior soul, to either conquer or perish with honor, is the secret of victory.
 George S. Patton
We are all warriors. Each of us struggles every day to define and defend our sense of purpose and integrity, to justify our existence on the planet and to understand, if only within our own hearts, who we are and what we believe in.
 Steven Pressfield
See first with your mind, then with your eyes, and finally with your body.
 Yagyu Munenori

Quotes from the same author

Friendship, like credit, is highest when it is not used.
Never explain - your friends do not need it and your enemies will not believe you anyway.
A little more persistence, a little more effort, and what seemed hopeless failure may turn to glorious success.
There is no failure except in no longer trying.
A failure is a man who has blundered but is not capable of cashing in on the experience.