Greg Fitzsimmons is a stand-up comedian and television writer/producer. A regular guest on The Howard Stern Show, Chelsea Lately, The Adam Carolla Show, and The Joe Rogan Experience. His 2011 book, Dear Mrs. Fitzsimmons received critical praise from NPR and Vanity Fair. But Greg is also an addict who had found recovery early on in life. He discusses his addiction and recovery in his book.