> COLIN FARRELL cut out his drinking after realising it was getting out of control. "Giving up alcohol has put more focus on my career, I'm more appreciative over what I have," he said.
> Presenter ZOE BALL quit alcohol, when she realised her drinking was so out of control there were "huge chunks [of my life] I don't remember -- or don't really want to remember".
> Actress DREW BARRYMORE fought addictions while still a child. She has described being addicted to drugs and alcohol but conquered her demons as she left her teens.
> BEN AFFLECK checked into an addiction clinic in 2001. "I quit drinking. It has no real bearing on anything else in my life."