The conscious mind is involved with the work to the point where it loses the need for itself. Identity becomes totally involved with the process, there are no thoughts, but a simultaneous expression of work. I had guests the other night and the word discipline came up. We laughed because initially it was misunderstood. Discipline has a negative connotation when it is impose on you from outside, but inner discipline is strength.
Inner discipline provides solid ground on which to build.
Because the work is solitary, there is time for contemplation as well. In my early attempts to gain self discipline, I had to develop an objectivity about my thoughts. It can develop whole stories that spin on endlessly, some like nightmares recur and follow a dreary cycle that have an enviable conclusion of depression, sadness, anger or defeat. To learn discipline, you have to disperse these thoughts, they are dreams and take you from your work. Allow the work to draw you back.