The group’s leader, a doctor called Ezra, is played by an actual psychoanalyst, Dr. Elliot Zeisel, presumably responding as he would in his practice. The patients are played by actors, improvising from scripted outlines that the writer-director, Alexis Lloyd, based on his experiences in one of Zeisel’s groups. Most of the cast, including Zeisel, appeared in an earlier web series, which offers a taste of the movie without the momentum.