怎样理解happiness is U-shaped

怎样理解happiness is U-shaped
怎样理解happiness is U-shaped

怎样理解happiness is U-shaped
就是幸福这个东西是先人有跌宕起伏,一开始的时候幸福指数很高,后来到了中年开始走入谷底,但是过了那个中年危机,幸福感又回升了,到了晚年什么都想开了,大家有开心快乐的生活了.
U-shape Curve of Happiness.

幸福是U字形的？

幸福是不需要分享的