How does one become rich?

Most people want to become rich, and I also want to be rich. Then, how does one become rich? There are a lot of ways to be rich. Usual way is that win in the lottery. Other way is that save the money without spending and etc. Although there are a lot of ways to be rich, actually, there are few rich. If it's easy to practice the ways to be rich, people won't want become rich. Because, Generally, people want be special person. A few days ago, I watched Korean drama. In the drama, there are two main characters. One of them is a person who works for small company. He receive little salary, But he is full of confidence and he looks so happy always.However, another one of main characters is completely different. Her grandmother has major company. And, she is going to be CEO in her grandmother's company. But she always feels depressed and lack of satisfaction. I preceived in the drama that people must change mind. The more has, the more wants. Unlike regular people's idea, rich try to make money more without satisfaction. Therfore people have to change mind into what can be feel satisfaction. This is the easiest way to become rich.