Researching, I came across a couple books referenced for writing fiction. One suggested book was preceded by 'To go deeper…" I found that book in a local library. Some books I begin to read and my whole body nods. From Where You Dream: The Process of Writing Fiction by Robert Olen Butler http://www.robertolenbutler.com/writings/non-fiction/from-where-you-dream/ is a body nodder.
Butler speaks of the artist's 'zone'. Writing from the unconscious. He mentions working with the football coach of the university where he was teaching. Both discovered their work to be quite similar to one another.