The Happiness Hypothesis brings its characters to life in this unique audiobook experience. Dive into its story like never before. The Happiness Hypothesis brings its characters to life in this unique audiobook experience. Dive into its story like never before. The Happiness Hypothesis comes to life like never before. Experience its story in an audiobook format that’s accessible and convenient. The Happiness Hypothesis comes to life like never before. Experience its story in an audiobook format that’s accessible and convenient.