Björn Borg quit tennis at age 25 due to a loss of passion for the sport.
## What led to his retirement?
He realized he was done after losing the 1981 Wimbledon and U.S. Open finals to John McEnroe.
Björn Borg was just 25 and had already won 11 Grand Slam titles by then.
## How did his childhood shape him?
He writes about his childhood and earning the nickname 'Ice-Borg' for his calmness on court.
This calmness was not always natural, but rather a result of his hometown tennis club banning him for six months when he was 12.
Björn Borg had to control his feelings and behave on the court to avoid suspension.
## What about his struggles with drugs?
He discusses his struggles with cocaine and two overdoses that landed him in the hospital.
The first overdose occurred in 1989 in Italy and was accidental, not a suicide attempt.
Björn Borg also writes about his panic attacks and how he started using drugs in 1982.
He says the first time he tried cocaine, he got the same kind of rush he used to get from tennis.
## What's next for Björn Borg?
His memoir 'Heartbeats' will be released in the United States on September 23.
The book contains revelations about his love life, adventures, and regrets.
Björn Borg is now 69 and has been diagnosed with prostate cancer.
He is promoting his book and sharing his story with the world.
The 292-page book is a detailed account of his life, including his time on and off the tennis court.
Björn Borg's story is one of struggle and perseverance, and his memoir is a must-read for any tennis fan.