We have seen how people describe the common characteristics of optimal experience: a sense that one’s skills are adequate to cope with the challenges at hand, in a goal-directed, rule-bound action system that provides clear clues as to how well one is performing. Concentration is so intense that there is no attention left over to think about anything irrelevant, or to worry about problems. Self-consciousness disappears, and the sense of time becomes distorted. An activity that produces such experiences is so gratifying that people are willing to do it for its own sake, with little concern for what they will get out of it, even when it is difficult, or dangerous.
Been aware of this book for a quite a long time, and finally reading it. That paragraph above describes an elusive way of working that I get to once or twice a week, but always hope for more of.