I just finished reading the book Finding Flow by Mihaly Csiksentmihalyi (pronounced chick-SENT-me-high).  Flow refers to a state of engagement.  When we devote our full attention to something, we are in a state of flow.  This "something" can be an everyday task such as driving or cooking.  It can be a recreational activity such as playing tennis or watching (participating in?) a UAAP game.  It can, of course, happen when we work--especially when we solve complex problems.

To Csiksentmihalyi, flow corresponds to quality of life.  A passive life, one that has minimal engagement, has poor quality.  The more flow you experience, the better your quality of life.  The quality of an experience is a function of challenge vs. skills.  When both skills and challenge are high but well-matched, an experience is optimal. 

Have you found your perfect combination?