Would you rather go to sleep feeling a sense of relief at the end of a long, arduous day in which you were extremely irritable and frustrated because everything seemed to be working against you ? Or would you rather go to sleep feeling a sense of relief at the end of a long, arduous day in which you did not let external events and people rule your day, in which you didn’t react to anything with hostility but instead embraced everything as it arrived, thanking your lucky stars for your good health and good life?