Life is a mixture of happy and sad moments
Take anger, a perfectly natural emotion but one which, when distorted, causes untold suffering (violent crime, war, terrorism, domestic violence). This highly charged emotion is inextricably linked to our fight-or-flight response, a threat-protection mechanism that's triggered by a primitive part of our brain. When we feel under threat, this powerful response kicks in, readying us in microseconds to either fight or flee.
