For example, our immune system, psychological and physical immune system is actually stronger as a result of being optimists.

比如我们的免疫系统，心理上和生理上的免疫系统，因为乐观而实际上增强了。

How promptly we can recover from these painful emotions in other words, how strong our psychological immune system is.

多么快速地从痛苦情绪中恢复过来 换言之 我们的心理免疫系统有多强。

No psychological system is closed, no consciousness is closed, regardless of any appearances to the contrary within your own system.

没有一个心理系统是封闭的，没有一个意识是封闭的，无论在你自己的系统中有任何相反的表象。

Because just as our bodies have a physiological immune system, our brains have a psychological immune system—and there are things you can do to help kick it into gear.

我们的身体里都有免疫系统，其实大脑里也有精神免疫系统，只是要用点办法才能启动。