What will you risk to get ahead? We live in culture that applauds overworking. Commonly heard complaints, such as "I am killing myself at work" usually get met with a pat on the back rather than a look of concern. Although, it's rare that even extreme cases of overworking lead to death, it's not unheard of. And this mentality isn't going anywhere. Any change in corporate culture will not take place overnight, especially in environments where excessive hours are a long-held tradition.
Sustainability doesn't only apply to business practices and our communities -- we need to be mindful of how it plays out in our personal lives as well, especially in the workplace. Burnout and overwork in corporate life have become so commonplace now that we just accept it as a permanent state of affairs.