"The Law of the Garbage Truck".
He explained that many people are like garbage trucks. They run around full of garbage, full of frustration, full of anger, and full of disappointment. As their garbage piles up, they need a place to dump it and sometimes they'll dump it on you. Don't take it personally. Just smile, wave, wish them well, and move on. Don't take their garbage and spread it to other people at work, at home, or on the streets. Don't let garbage trucks take over your day. Life's too short to wake up in the morning with regrets, so
"Love the people who treat you right; Pray for the ones who don't."