Doing business and investing are essentially two different skill sets. Business is an activity aimed at others, with the core being influencing perceptions. You need to communicate, package, and narrate in a way that others understand and recognize your value, thereby facilitating cooperation. Therefore, it requires communication skills, trust-building, and an understanding and application of human nature. Investing, on the other hand, is more an activity directed at oneself. The market won't change because of your expression; the only thing you can control is your own judgment and actions. Therefore, the core of investing lies in self-discipline: identifying and managing greed, fear, and emotional fluctuations, to make decisions as rational and stable as possible.