$Tesla (TSLA.US)$ The most important quality for a qualified investor is character, not intelligence. In investing, we don't need to be smarter than others, but we must have more self-discipline than others.
The reason why many people lose money in stocks is because most people have no investment discipline, investment principles, or investment models. Even if they have discipline, it is difficult for them to adhere to it and overcome human fear and greed.
Sharing a personal experience with all the confused stock friends.