If, therefore, you wish not to be hot-tempered, do not feed your habit, set before it nothing on which it can grow. As the first step, keep quiet and count the days on which you have not been angry… . If you go as much as thirty days without a fit of anger, sacrifice to God. For the habit is first weakened and then utterly destroyed.
—Epictetus, Enchiridion (via radicaltraditionalism)