持续幸福

find happiness───找到幸福

human happiness───人类的幸福

sustained success───持续成功

retained earnings───[会计]留存收益

unhappiness───n.苦恼；忧愁

restrainedness───克制

snappiness───柔韧性；高弹性

The biggest factor may be getting over the idea that happiness is fixed — and realizing that sustained effort can boost it.───最重要的一点也许是尽快克服“幸福水平一成不变”的想法，而应该认识到，持续的努力是可以提高幸福感水平的。

Sometimes I think, do not know the pleasure or pain, do not know how long this happiness can be sustained.───有时候自己想想，不知道该高兴还是痛苦，不知道这幸福还能持续多久。

real mechanism that most weighted people's capacity for sustained happiness was intentional activities.───真正超越人们的能力来维系幸福的机制是有意的活动。