During his life, Richard Carlson, Ph.D, was considered one of the foremost experts in happiness and stress reduction in the United States and around the world and was a frequent featured guest on such shows as Oprah, The Today Show, The View, NNC, CNN, Fox, PBS and over 2000 other shows.Don't Sweat the Small Stuff continued to be a publishing phenomenon with over 20 titles in the brand franchise, two of which were co-authored and authored with his beloved wife, Kris. He died of a pulmonary embolism in December 2006, at the age of forty-five.

The words "Don't Sweat the Small Stuff" have become a part of American Culture thanks to Richard Carlson's book that became a runaway best-seller and made publishing history as the #1 best-selling book in the United States for two consecutive years.

Don't Sweat the Small Stuff spent over 100 weeks on the New York Times Best-Seller list and is still considered one of the fastest selling books of all time and has sold over 15 million copies worldwide.