"Transformative."--Greg McKeown, New York Times bestselling author of Essentialism and Effortless Change your mindset from problem-focused ("yes, but") to opportunistic ("yes, and") using omdenken, the Dutch art of flip thinking--from the bestselling author and founder of the omdenken philosophy. Imagine this: You've got a great idea, and all you hear are the yes-buts. "Yes, but...