Are we not be clever enough to be rich?

Many people think that the rich people are all clever ones. This is not the truth. Many clever people are not rich, and many rich people are not clever. So what is the reason that make u rich? Focus! If you focus on one field for enough time, then you will be an expert in that field. Then you will do it better than other people. This is the reason that rich people are rich. Many smart guy are not expert in any filed. So they are not better than anyones in any particular field. So id you want to be rich, you just have to focus, and become an expert in at least one field.