Behavioral finance is a science that studies how people's emotions and thinking can affect their financial decisions. It combines research and practical knowledge to help investors make smart choices with their money. Over the years, it has grown from being a new field to now being recognized as an important part of finance. By understanding how people think and feel about money, experts can create better investment strategies that match individual personalities. This helps investors reach their financial goals more effectively. In short, behavioral finance helps us understand why people make certain financial decisions and how we can use this knowledge to improve our own financial outcomes.