The flow of learning proceeds from frustration to mastery to boredom and back to frustration in a continual upward moving spiral encompassing greater and greater circumference. The circumference encircles more and more of the world of ideas and spiritual understandings in the dance of consciousness. Frustration therefore is to be desired and mastery should be considered a transitory state. Page 85. "Acting, Archetype, and Neuroscience", Routledge, 2016. Jane Drake Brody, author