John Kerry has served most of his adult life in public service - as Navy lieutenant in combat in Vietnam, a prosecutor, lieutenant governor, Democratic nominee for president of the United States, five-term senator, and U.S. Secretary of State. He has been witness to and participant in some of the most important events of our recent history. His latest book, "Every Day Is Extra," is a revealing memoir where he acknowledges faults, mistakes, and lessons learned the hard way.