It's true: a mind is a terrible thing to waste. Yet that's what we do when we spend our weekend -- and neurons -- reliving a workplace squabble, spend a family visit chewing over childhood issues, or spend hours beating ourselves up when someone brings one of our own long-held (but never worked on) ideas to fruition. This kind of obsessing gets us, like a hamster on a wheel, nowhere. But as noted creativity expert Eric Maisel asserts, obsessing productively leads to fulfillment rather than frustration. A productive obsession, whether an idea for a novel, a business, or a vaccine, is chosen deliberately and pursued with determination. In this provocative, practical guide, Maisel coaches you to use the tendency to obsess to your creative advantage, fulfilling both your promise and your promises to yourself.