To be successful and enjoy a happy life, it's important to do all the right things: become well educated and wise, develop a strong work ethic, always act with integrity, and treat others well. But what's equally important-yet widely overlooked-is avoiding the calamities that cause you to suffer, go back to square one, or worst of all, die a premature death. Famed investor Whitney Tilson has made a living managing risks with investments...