Based on scientific research and psychological studies of real people, these 100 practices, attitudes, and habits have been proven to transform a unhappy existence into a full and happy life. Experts have spent their careers investigating what makes people happy. While their methods are sound and their conclusions valuable, the results often remain hidden in obscure scholarly journals. At last, social scientist and psychologist David Niven, Ph. D., has cut through the scientific gobbledygook. After examining over a thousand of the most recent and important scholarly studies into the psychological traits of happy people and uncovering their most promising discoveries into the causes of happiness. Dr. Niven presents 100 easy-to-digest nuggets of advice: 'Enjoy what you have.' 'Believe in Yourself.' Grounded in science, his approach is fresh, useful, and inspiring.