Sonny Bill Williams hopes his story helps youngsters facing the same struggles

Williams says he finally decided to tell his story in an attempt to help another “young Sonny Bill”

Sonny Bill Williams has released an autobiography (PA)

Sonny Bill Williams has lifted the lid on a life of drugs, alcohol and womanising in a searingly honest autobiography he describes as “therapeutic”.

The former All Black and Kiwi international, who called time on his career in March at the age of 35, has been widely dubbed the best rugby player of either code throughout a distinguished professional career spanning 18 years.