About the script and the way it was performed, Duplass stated, "The way this worked, there (was) about a 50-page document that was the entire movie - the scene beats, everything, locations - except for the actual dialogue in the film. And most of the dialogue you see in the film is improvised. Although in certain scenes, where we have effects and things like that, Justin our writer [Justin Lader] would write out a version of that scene the night before, to give us a good guide, so we could have something to stick to."
The filming location is Ted Danson and Mary Steenburgen's home. Photos of the guest house can be found in a Houzz article titled "Ted Danson and Mary Steenburgen's Guesthouse Brims With Charm."
The director Charlie McDowell's then girlfriend, Rooney Mara, was the costume designer. She goes by a pseudonym on the movie because they didn't want to credit Rooney Mara, costume designer. She's Bree Daniel on the credits.
Ted Danson, playing the therapist, is director Charlie McDowell's stepfather. McDowell's mother Mary Steenburgen is also featured doing voice work.
In the therapist's office, several clocks are shown, including a chess clock. All of the clocks and both faces on the chess clock show a different time.