If you have ever been “in the zone” or, as the author calls it, “flow” in any activity you know the joy of getting completely absorbed in what you are doing. You lose sense of time, you lose sense of effort. Everything seems to work together. You feel lighter, faster, smarter, more clever. Don’t we all wish we could work in that mindset all the time? But doesn’t it feel like completely unpredictable magic? The author calls this “flow” state an “optimal experience” and breaks down exactly the conditions needed to get into flow in any activity, and maintain it as long as we want.