Watch The Happiness Salesman for Free: How to Stream the Movie Online at 123Movies. . Karen is resigned to a life of suburban ennui, the dreams of her youth a distant memory. On an autumn afternoon as she struggles to get her baby to sleep she is disturbed by a door-to-door Salesman. Desperate for adult companionship she engages with the enigmatic Salesman. He claims that he can sell her something that will radically change her life; he offers Karen, an opportunity to fulfill her long forgotten dreams and ambitions.