If you do not wish to be prone to anger, do not feed the habit; give it nothing which may tend to its increase. — Epictetus. Greek Stoic philosopher (c. 50 – c. 135) Anger
If you would cure anger, do not feed it. Say to yourself: 'I used to be angry every day; then every other day; now only every third or fourth day.' When you reach thirty days offer a sacrifice of thanksgiving to the gods.