Dr. Kevin Sheehan is a tenured associate professor at Molloy College where he has served on the faculty for over a decade as well as being an internationally recognized coach in the world of lacrosse. In the lacrosse world, Kevin's accomplishments are numerous including helping to coaching Adelphi University to three Division II National Championships, the Australian National Lacrosse Team to two Bronze Medals, and Massapequa High School to its first New York State Championship on the scholastic level. A member of the Long Island Metropolitan Branch of the US Lacrosse Hall of Fame, Kevin, believes that all of these coaching efforts have been shaped and influenced by positive psychology research that defines this book. Charlie Sullivan will enter his 21st season as head coach of the men's volleyball team during the 2018-19 academic year, and will once again be an assistant professor of physical education at his alma mater. In 20 previous years at the helm, Springfield has established a pedigree of championship success and has an overall record of 396-181 for a .686 winning percentage. In addition to his role as the men's volleyball coach at Springfield, Sullivan has also had several stints with the U.S. National Team. Recently, Sullivan was chosen to receive USA Volleyball's All-Time Great Coach award in the Donald S. Shondell Contemporary Division for 2015.