The revelations in his book about drug use are to help atone for the mistakes he has made and are not motivated by money, Andre Agassi said Friday.

He took the highly-addictive narcotic crystal meth in 1997 while suffering poor form and to quell worries about his upcoming marriage to actress Brooke Shields, the 39-year-old American, who is only one of six men in history to have completed a career grand slam of winning titles at all four majors, confessed in his autobiography “Open.”

Agassi–who is married to former women’s tennis player Steffi Graf–is hopeful that the book will also be able to help those in mainstream life who suffer from addiction problems.

He said, “This is not something you put in a press release or something you communicate in a headline or an article–this is a body of work which is my life and is part of my journey.”

(article source: CNN, photo source: Forbes)