So much depends on how I hold the brush
Ever since I was young I have found that during lectures I take better notes and pay better attention if I am also sketching. In a long meeting today that wound up being more lecture than conversation, I took out my pocket watercolor set and, for the first hour, painted sandhill cranes. For the rest of the meeting I decided to practice calligraphy with a new Pentel brush pen that uses the same cartridges as my fountain pens. The brush is pretty smooth but when I hold it as one should for Chinese calligraphy it takes more art than I have to get the words right. So I kept practicing.
In both cases, so much depends on how I hold the brush.