Two types of hapiness: Hedonic happiness and Eudaimonic hapiness and immune system

The following is from http://m.theatlantic.com/health/archive/2015/02/what-a-happy-cell-looks-like/385000/?utm_source=SFTwitter

“There are two distinct forms of happiness, hedonic happiness and eudaimonic happiness, and our bodies respond differently to each type,” Cole explains. “Hedonic happiness is the elevated mood we experience after an external life event, like buying a new home,” while eudaimonic happiness “is our sense of purpose and direction in life, our involvement in something bigger than ourselves.” Of the two, eudaimonic happiness in particular is associated with a better-functioning immune system, according to Cole.