It's a long-term plan, which can go wrong if you get sick and die in your early 20s.

这是长期的计划，若你在二十几岁生病死去它就会出错。

耶鲁公开课 - 死亡课程节选

It is "you are ill because you don't have enough health in your life, " because you are not pursuing those things that make you healthy".

它说的是,“你生病了，是因为你还不够健康，因为你不去追求那些让你健康的东西。

哈佛公开课 - 幸福课课程节选