If you're alive, you experience stress. It's just part of being human. For early man, stress helped us flee danger like a marauding mammoth, a hungry sabre-toothed tiger or an invading tribe. It literally helped us fight or flight. In modern society a little stress is useful, it keeps us energised and motivated to get things done, it helps us to turn up and be on time. Yet too much stress is harmful, and stress is sadly, at an all-time high. Unfortunately, it's almost impossible to avoid or substantially reduce stress in our lives. The things that make us stressed are the same things that...