The document discusses research on millionaires and the traits common among them. Two key lessons are discussed. First, millionaires often found engagement through a vocation they were passionate about, which could lead to wealth over the long term through persistence and diligence. Second, millionaires often displayed courage by taking risks, being self-employed, and persisting in the face of failure or criticism. Having an internal locus of control over one's life, rather than feeling externally controlled, is important for success. The document advises focusing on engagement and cultivating courage rather than obsessing over money.