最重要的是忠于自己，忠于自己的声音，忠于自己的愿景。

Every miner's contribution is vital to keeping the lights on.

That's exhilarating if you're doing well, and very crushing if you're not. It leads, in the worst cases -- in the analysis of a sociologist like Emil Durkheim -- it leads to increased rates of suicide. There are more suicides in developed, individualistic countries than in any other part of the world. And some of the reason for that is that people take what happens to them extremely personally -- they own their success, but they also own their failure.

The most common form of despair is not being who you are.