David Mezzapelle believes that we all have the capacity to make optimism contagious just by sharing our life's adventures. Mezzapelle is the founder of the Contagious Optimism movement and the author of Contagious Optimism, a bestselling book series that contains real stories from real people around the globe which demonstrates that every cloud has a silver lining.

Mezzapelle was inspired to write this book series based on his life's experiences, his own contagious optimism, and the encouragement of his Alma Mater, Fairfield University in Connecticut. A portion of each sale will go to the school along with other charities.

Throughout his life Mezzapelle has encountered great peaks and valleys, all of which he is grateful for. He never lost sight along the way and has kept his glass "completely full." He has influenced many people with his outlook and Contagious Optimism is his way of offering optimism to others.

Mezzapelle has been a guest on various radio and television programs along with being a contributor to numerous publications around the globe. He is also a TED and Contagious Optimism LIVE speaker.