Neurobiologist Antonio Damasio, in his fascinating book, Self Comes to Mind: Constructing the Conscious Brain, postulates that our brains generate three levels of self. The first and deepest is the protoself. The next tier he calls your “core self”—that sense of “I-ness” and “mine-ness” that separates you from what is not you and not yours. In this episode, we’re going to use a guided meditation to see if you can detect the operation of your core self.