Thank someone for something. Go out of your way today to acknowledge the generosity of a person you know. It doesn't matter if you have known this man or woman your entire life, or have just met him or her and don't know if you will ever see the person again. Thanking him for a service rendered, or a favor given, or for help of some kind will enlarge your personal community to include yet another person.
Do you patronize a business establishment that always provides you with excellent service? Thank the proprietor, or tell an employee how much you appreciate the way your are treated every time you walk in, and ask him to pass the message on to the owner of the business. Or write a quick note to this effect and give it to the person you are talking to.
Thanking someone for a service rendered builds community, as well as friendship. It makes even the most insignificant encounters, like a stranger holding the door for you at the deli, all the more meaningful. It's a way for two people who will probably never know each other's names to connect, even for a moment.
— Alan Epstein in How to Have More Love in Your Life