Csikszentmihalyi studied what he called optimal experiences, those rare moments in human existence when a person feels free of mundane distractions, in control of his fate, totally engaged by the moment. Csikszentmihalyi came up with a word for this state of intense concentration: flow. He wrote that flow moments most often occur “when a person’s body or mind is stretched to its limits in a voluntary effort to accomplish something difficult or worthwhile.”
