Thirteen Conversations About One Thing (2001)

A physics professor approaching middle age decides to change his life with unexpected results. A rising young prosecuting attorney's plans are thrown into disarray as the result of a single careless act while distracted. A woman reluctantly faces her husband's infidelity. An envious insurance claims manager with family problems seeks revenge on a cheerful coworker, but has second thoughts. And an optimistic young cleaning woman awaits a miracle, only to have her faith shaken by a traumatic event. These ordinary people all find themselves asking the fundamental question philosophers have pondered throughout history: What is happiness, and how does one achieve it?