The document discusses the concept of "flow" - a state of complete focus and engagement in an activity where one's skills are fully utilized. Flow is described as being "in the zone" and feeling totally at one with the activity. Examples are given of athletes who achieve flow states during competition, such as UFC fighter Lyoto Machida using meditation techniques and Formula 1 driver Ayrton Senna describing driving in an altered, instinctual state. For flow to occur, the challenge level must match the individual's abilities and intrinsic motivation and goals are important factors, along with clear feedback.