We all have an inner voice. You know what I mean: It's that voice within us all, and boy, does it like to talk. Now, if you could take that voice and imagine it's the voice of a separate person who follows you around and talks to you all day, what would it say? If you're like most folks, it would deliver a motley mouthful. That voice sizes up the present, anticipates the future, and examines the past. It evaluates other people and the surrounding...