Hollywood wildman Colin Farrell checked himself into rehab to treat exhaustion and an addiction to painkillers because he wants to be sober for the sake of his infant son. The Alexander star decided to get clean seven months ago and has not touched a drop of alcohol in half a year. The 30-year-old claims he has a new sense of purpose, brought about by his love for his two-year-old son JAMES. Farrell says, "I was burning the candle at both ends and flames met in the middle. It just caught up with me. It was a long time coming but I had my a**e handed to me on a plate. "Now I haven't had a drink in six months. "I have a new-found appreciation for my life. I wasn't suicidal but I never had much of a will to live for a long time. "Now I want to watch my son grow up, be his friend and his father, and hang around with him. So he's the greatest priority in my life."