The psychology of money' Hindi edition. Timeless lessons on wealth, greed, and happiness doing well with money isn’t necessarily about what you know. It’s about how you behave. And behavior is hard to teach, even to really smart people. How to manage money, invest it, and make business decisions are typically considered to involve a lot of mathematical calculations, where data and formulae tell us exactly what to do. But in the real world, people don’t make financial decisions on a spreadsheet.