The Concept of "Flow"

Psychology Professor Mihalyi Csikszentmihalyi's "The Current Model of the Flow State".

The concept of "flow" is like a "complete absorption in what one does as it progresses well". As shown below, it is related to the skill level and challenge level an individual is encountering.

"Flow is experienced when perceived challenges and skills are above the actor's average levels; when they are below, apathy is experienced. Intensity of experience increases with distance from the actor's average levels of challenge and skill, as shown by the concentric rings."

Nakamura, J. and Csikszentmihalyi, M. The Concept of Flow Chapter 7 in Handbook of Positive Psychology, Eds. C.R. Snyder and S.J. Lopez (2002), pp. 89-105.