Compliment people who impact your daily life so invisibly that you may not think about them regularly: the postal worker who delivers your mail, the person who picks up your trash, the bus driver who delivers you to and from work, your boss, the person who stocks the shelves in the supermarket. Make a list of all the people who make your life easier, whom you don't often see, and compliment them. If you don't see them all today, focus on complimenting them during this month.

Susyn Reeve in Choose Peace and Happiness