What is the secret to a happy life? Ask anyone you know, and each will provide a different and widely varying response. In 1938, 268 men volunteered for a intriguing study conducted by Harvard University — one in which their personal happiness might be measured throughout the years. Though no single study could ever predict the outcome of a man’s life, there were some interesting revelations. Two of the most important lessons learned? Omnia vincit amor, or “love conquers all.” And, the other? All men have the capacity to change. Read more of this fascinating study to learn from those who have truly discovered happieness in life.