Catherine Sanderson - Smile, be happy and live longer?

A simple smile, a friendly gesture or an offer of help and friendship, could help us all live longer, healthier lives. International Day of Happiness (March 20) is celebrated by the United Nations as a way to recognize the importance of happiness in the lives of people around the world. There is scientific data that suggests people who embrace the benefits of a positive attitude, are rewarded with a greater sense of well-being. Catherine Sanderson is a psychologist and professor in Life...