This situation reminds that when we treat others kindly, it will cheer them and they will respond in kindness. Here is another example that comes to mind. On David's birthday we took our little family out to dinner at a restaurant. The waiter greeted us but from the moment he saw us I seemed to get the impression that he was upset that he had to serve this family who probably wouldn't tip. We were kind and polite and our children were sweet and were so happy to be on this outing. Suddenly his attitude changed toward us, he was kind and became friends with us and chatted with us and we really had fun. When we came home we couldn't stop talking about how nice he was and what a great experience this was. Clark decided to call the restaurant and tell the manager to thank that waiter for us. She was surprised to receive a kind phone-call and even told us the waiter had been having a hard day today.
Kindness and care towards people really can spread. Through these experiences not only did it cheer us up, but it spread to many others and I am sure they spread it to others as well, and so on and so forth. What an amazing thing kindness is. I want to continue these happy feelings to others and change the bitterness in the world to happiness.
"There is no end to the good we can do, to the influence we can have with others. Let us not dwell on the critical or the negative. Let us pray for strength; let us pray for capacity and desire to assist others. Let us radiate the light of the gospel at all times and all places, that the Spirit of the Redeemer may radiate from us."
Gordon B. Hinckley, “The Need for Greater Kindness,” Ensign, May 2006, 58–61