「If, then, you wish not to be choleric, do not feed the angry habit, do not add fuel to the fire. To begin with, keep quiet, and count the days when you were not angry.」
「Remember that it is not he who reviles you or strikes you, who insults you, but it is your opinion about these things as being insulting. When then a man irritates you, you must know that it is your own opinion which has irritated you.」