According to Galen Strawson in “I am not a story”
The tendency to attribute control to self is, as the American social psychologist Dan Wegner says, a personality trait, possessed by some and not others. There’s an experimentally well-attested distinction between human beings who have what he calls the ‘emotion of authorship’ with respect to their thoughts, and those who, like myself, have no such emotion, and feel that their thoughts are things that just happen.
Consider also the Michael Leyton quote in “Active Seeing”
The revolutionary action of the painting, while being central to its meaning for the viewer, as well as its meaning for modern art, was an intensely personal experience for Picasso himself. During this period, Picasso seems to have turned inward and become particularly concerned with his own creativity. That is, not only was he engrossed in the products of his creativity, but he was deeply pre-occupied with, and mystified by, the creativity itself.