Why are some people so rich and others so poor? Is it from good choices or good luck? Hard work, smarts, and ability—or something else? That depends who you are comparing yourself to. If you are more successful than your friends, colleagues, and family members, surely a lot of it is because you are better at what you do, or have made better choices, or have worked harder to get where you are. Think former President Bill Clinton, compared to his somewhat less successful brother.