The Little Book of Lykke: Secrets of the World's Happiest People (The Happiness Institute Series)

by Meik Wiking

Like most things, the more we have of something, the less happiness we derive from it. The first slice of cake: awesome. The fifth slice: not so good. Economists call this the law of diminishing marginal utility. That is one of the reasons why some countries and people get richer—but not happier.

millions of Japanese walk along forty-eight “forest therapy” trails, to get their dose of what I guess could be labeled “outdoorphins.”