Flow by Mihaly Csikszentmihalyi

Psychologist Mihaly Csikszentmihalyi says it is best to think about the universe in terms of order and chaos (entropy)

The best way to have an ordered mind, and a life of meaning, is to engage in many ‘flow’ activities.

A flow activity is one undertaken for its own sake rather than an end result – running a marathon for the joy of it, say, rather than in desperation to win the race.

In a nutshell, flow makes life more meaningful, and a meaningful life, argues Csikszentmihalyi, is the key to happiness.