Contrary to what most of us believe, happiness does not simply happen to us. It's something that we make happen, and it results from doing our best. Feeling fulfilled when we live up to our potentialities is what motivates differentiation and leads to evolution.
Mihaly Csikszentmihalyi
Source: Good Business : Leadership, Flow, and the Making of Meaning, Pages: 38
Contributed by: ~C4Chaos