How does good calligraphy bring income in life?

I think practicing calligraphy can cultivate a person's concentration. Jobs specialized in calligraphy when he was studying, especially in western languages. He said that he didn't know what it was for, but later it affected many products he made. One of my colleagues has been practicing calligraphy since childhood, and the biggest gain is that he can take notes quickly in class, and he can remember it with a few strokes of cursive writing brush, which is also very beautiful. The same colleague now has a very unique vision for product design. The aesthetics of "situation" and "structure" were formed at that time. The handwriting is very good. If you are a little famous, you can also write inscriptions for companies and enterprises. We call this income pen fee.