Interesting quote on anger

Don't presume the world was constructed specifically to annoy you.Stop personalizing everything.That rude cashier isn't just rude to you.She is rude to everybody.If her mother couldn't teach her not to be rude by age 25,how are you going to do it in a five-minute conversation?-Peter Favaro in
ANGER MANAGEMENT:SIX CRITICAL STEPS TO A CALMER LIFE.