If you are feeling blue, hang out with happy people! Findings show that being around upbeat people can boost your spirits, and that this cheeriness is contagious: it spreads outwards by three degrees, so friends of friends are happy. Investigators from Harvard and the University of California, San Diego, tracked more than 4,700 people over 20 years, each of whom completed a questionnaire about their moods. The results of being a person who always has a smile? You are more likely to be at the center of social networks and have many friends who are happy. The investigators calculated that each happy friend you have increases your chances of being happy by nine percent, while having downbeat friends reduces the chance by seven percent. It's difficult to say whether acquiring positive friends makes you happy, or whether people who are already cheerful tend to become friends - either way, it can't hurt to surround yourself with positive people!
6 more reasons to be thankful for friends.