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 mak
David Niven, Ph.D., bestselling author of the 100 Simple Secrets series, is a psychologist and social scientist who teaches at Ohio State University.
David Niven, Ph.D., es el autor de los bestsellers internacionales Los 100 Secretos de la Gente Exitosa, y Los 100 Secretos de las Buenas Relaciones. Es psicólogo y científico social, y enseña en la Florida Atlantic University.