Sixteen years ago, I learned an important life lesson in the back of a New York City taxi.

    I was on my way to Grand Central Station, and we were driving in the right lane when a black car suddenly sped out of a parking space right in front of us.

    My driver fit the brakes hard, skidded, and missed the other car by a few inches. The driver of the other car, the man who had just nearly caused a huge accident, started shouting at us. My taxi driver just smiled and waved at him. He was really friendly!

    “Why did you just do that?” I asked him. “This guy almost destroyed your car and could have sent us to the hospital!”

    This was when my taxi driver told me what I now call “the Law of Garbage Trucks”.

    “Many people are like garbage trucks. They run around full of garbage, full of anger, and full of disappointment,” he said. “As their garbage piles up, they need a place to dump it, and if you let them do, they'll dump it on you. So when someone wants to dump on you, just smile, wave, wish them will, and move on. You'll be happier because of what you have done.”

    I started thinking, how often do I let Garbage Trucks run right over me? And how often do I take their garbage and dump it on other people—at work, at home, or on the street? It was on that day that I said, “I'm not going to dump anymore.”