The 100 Simple Secrets of Happy People Author:David Niven, Ph.D. Scientists and academics have spent entire careers investigating what makes people happy. But hidden in obscure scholarly journals and reports, their research is all too often inaccessible to ordinary people. At last, social scientist and psychologist David Niven, Ph.D., distills the scientific gobbledygook of over a thousand of the most compell... more »ing and important studies on happiness into easy-to-digest nuggets of advice.« less