On my way home from work recently, the toll booth lane got backed up. When I finally got to the attendant and reached out to hand her my money, she said, “The guy in front of you just paid your toll." I was shocked. I paused and said, “Did he say why?" She said, “Well, the guy in front of him paid for him, so he paid for you. It's that pay-it-forward thing." I didn't need to think twice. I handed her my money and said, “Okay. Then I'll pay for the person behind me." Her face lit up and with a big smile she said, “Oh, my! That makes number eight! I wonder how long it will keep going?!" Her reaction was contagious. I drove off with a big smile on my face too. It literally changed my mood. I felt different.