Dan Harris’ book 10% HAPPIER How I Tamed The Voice In My Head, Reduced Stress Without Losing My Edge, And Found Self-Help That Actually Works- A True Story captured the #1 spot on the New York Times Best Sellers list. On April 2nd Dan Harris appeared on The Colbert Report. On April 16th at 7pm, Mr. Harris will appear in New York City at Academy of Life @ New York Society of Ethical Culture (2 W. 64th Street). IT books published the book in hardcover March 11, 2014.