如果一个人很有幽默感，我们推测，这意味着他很快乐，在社交方面很自信而且对生活有一个正确的看法。
If someone has a great sense of humor, we reason, it means that they are happy, socially confident and have a healthy perspective on life.
快乐的人有一个共同点：他们对生活中所有美好的事物都心存感激。
Happy people have this in common: They are grateful for all the good things in their lives.
我花了几年的时间来研究快乐，我得出的一个最重要的结论是：人们的生活状况和他们有多快乐没有多少相关性。
I've spent years studying happiness, and one of the most significant conclusions I've drawn is this: there is little correlation between the circumstances of people's lives and how happy they are.
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