The Prisoner of Second Avenue by Neil Simon

Mel Edison is a well-paid executive at a high-end Manhattan firm. But when the firm hit the skids, Mel gets the ax. His wife Edna takes a job to tide them over, but she too is sacked. Thanks to the air pollution killing his plants, and the paper-thin apartment walls allowing him a constant earful of his neighbors’ private lives, Mel's life can’t seem to get any worse. Then he’s robbed, and his psychiatrist dies with $23,000 of his money. Mel does the only thing left for him to do: He has a nervous breakdown – and it’s the best thing that ever happened to him.