What is the theme in Money: A Suicide Note by Martin Amis?

Excess is a theme to consider. The name of the novel "Money" by Martin Amis clearly states one of John Self's biggest obsessions: money. Throughout the novel, John makes his preoccupation with sex and money well known. He is frequently thinking about the money his is spending, the money he has, and the money other people have. When he is not thinking about money, he is visiting strip joints or pornography shops, or picking up hookers. John lives his life to excess, not worrying about how he spends money. He equates money with sex in his mind, and so do some of the people around him.