Whether sharing photos or following financial markets, many of us spend a shocking amount of time online. While the Internet can enhance well-being, Elias Aboujaoude has spent years treating patients whose lives have been profoundly disturbed by it. Part of the danger lies in how the Internet allows us to act with exaggerated confidence, sexiness, and charisma. This new self, which Aboujaoude dubs our "e-personality," manifests itself in every curt...