There's a voice in your head that shows up every time you're about to do something that matters. It arrives right on cue. You've thought the decision through. The logic holds. You can see the path. And then it starts. What if this goes wrong? What if you're not ready? What if people think you've lost your mind? You've probably spent years assuming that voice is just you. The honest, realistic part of you doing due diligence. The part that keeps you grounded. But what if it isn't you at all? I...