Oh happy day! Yale University has a class centred around inner peace and happiness, and surprise, it’s one of their most popular. Psychology and the Good Life is taught by professor Laurie Santos and, over a short time, has become one of the most popular classes in the university’s history. “Students report being more depressed than they have ever been in history at college,” Professor Santos explained. “Social science research has led to many new understandings of how people find happiness.