A Master of martial arts has not mastered punching or kicking. It is not that he has mastered self control. What he has mastered is the art of practice.
He has set his mind to pay attention to everything he thinks and does. In this mastery of awareness, the master practices immediate restraint. If there is any lapse in judgment or action, the master quickly brings it back under control.
Mastery of martial arts does not apply only to battle. It applies to absolutely everything under his control. He takes great care of his “world“.
We speak of doctors as practicing medicine. They are thoroughly embroiled in their work, whether they are on duty or off. We speak of jobs as professions. Consider that if we profess something is true, it would be best if such things are true. The master of any profession then has mastered the art of restraint for the sake of what he says He does for a living.
A professional driver, a professional lawyer, a professional labor, a professional teacher, a professional politician, a professional human being, a professional Christian.