There seem to be quite a few TED talks available on the subject of resilience. This in itself is an interesting indication of what working life must be like for many people these days: if so many speakers dedicate time and effort discussing the ability to cope with extreme pressure and bounce back, it must surely be something people are interested (possibly desperate) to hear about.
Making tough decisions is an unavoidable part of being a manager. It takes courage to cut staff, to tackle poor performance or to kill a much loved but no longer viable project. But that doesn’t mean you have to become toughened and uncaring about the people involved. There’s absolutely no reason that courageous decisions cannot be executed with compassion, and several good business reasons why they should.