The Power of A Positive NoBy: William Ury An empowering guide to setting boundaries and negotiation from multi million copy bestselling author William Ury PhD, perfect for fans of Never Split the Difference, The Power of Now and The Let Them Theory This book will change your life, personal and professional, as it has the lives of these readers: 'Wish I had read this ten years ago!' 'This book is so powerful! I really wish I had read it in the early days of setting up my