Enjoyment appears at the boundary between boredom and anxiety, when the challenges are just balanced with the person's capacity to act.
Mihaly CsikszentmihalyiThose periods of struggling to overcome challenges are what people find to be the most enjoyable times.
Mihaly CsikszentmihalyiOnly direct control of experience, the ability to derive moment-by-moment enjoyment from everything we do, can overcome the obstacles to fulfillment.
Mihaly Csikszentmihalyi