I watched the ted video on "flow" by Mihaly Csikszentmihalyi
http://www.ted.com/talks/mihaly_csikszentmihalyi_on_flow?language=en#t-801325 Mihaly Czikszentmihalyi asks, "What makes a life worth living?" Noting that money cannot make us happy, he looks to those who find pleasure and lasting satisfaction in activities that bring about a state of "flow."