We conclude our series on living with anxiety with three segments on different topics related to the subject. First up is a conversation with philosophy professor Peter Hallward about the connection between anxiety and existentialism. Then author and book reviewer Reeve Lindbergh discusses Susan Cain's take on introversion in the 2013 book Quiet. We close with a comparative review of apps for reducing anxiety by Rob McGinley Myers of the blog anxiousmachine.com.