Even-tempered

Definition: placid; calm; not quickly angered, excited, or disturbed

Proverb: He who has knowledge uses words with restraint, and whoever has understanding is even-tempered. — Proverbs 17:27

Observation: Some female elephants are both so intelligent and so even-tempered that villagers in Thailand have used them as babysitters. — Burkhard Bilger, American New Yorker staff writer

Tip: Count to ten when you feel anger beginning to rise. It’s an old trick but it works if you have good intentions (and remember to do it).