Counting your kind acts throughout the day will make you happier. This is what a team of Japanese and a U.S. researcher found in two studies they conducted.

Overall people who counted their kind acts each day for a week became happier for at least a month later. And the increase in happiness was greater for people who were already happy to begin with. This finding was the result of two studies in 2006 by researchers Keiko Otake, Satoshi Shimai, Junko Tanaka-Matsumi, Kanako Otsui, and Barbara Fredrickson.