Stanford University: Dr. Michael Wheeler's "Martin Heidegger: Death"

Read this article. As you read, pay special attention to the description of how Heidegger claims that we avoid thinking about our own death in our everyday lives. How is our avoidance of thinking about our own death related to what Heidegger calls authenticity and inauthenticity? When are we at our most inauthentic, according to Heidegger?