Flow is the process of achieving happiness through control over one's inner life. The optimal state of inner experience is order in consciousness. This happens when we focus our attention (psychic energy) on realistic goals and when our skills match the challenges we face.
Mihaly CsikszentmihalyiIt is as if evolution has built a safety device in our nervous system that allows us to experience full happiness only when we are living at 100%-when we are fully using the physical and mental equipment we have been given.
Mihaly CsikszentmihalyiContrary 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