Fight Club

The first rule about fight club is you don't talk about fight club.

Fight Club follows the experiences of an unnamed protagonist struggling with insomnia. The protagonist finds relief by impersonating a seriously ill person in several support groups, after his doctor remarks that insomnia is not "real suffering" and that he should find out what it is really like to suffer. The protagonist then meets a mysterious man named Tyler Durden and establishes an underground fighting club as radical psychotherapy.

This is a gloriously original work exposes the darkness at the core of our modern world.