'Overworked' Colin checked into rehab to prevent return to substance abuse
Colin Farrell's surprise return to rehab has been prompted by feeling "overworked and under pressure".
The Hollywood star (41) successfully conquered his much-publicised issues with alcohol and drugs and has remained sober for the past 12 years.
However, a source close to Farrell said he took the pre-emptive step of checking himself into a rehab centre in Arizona as he was worried about falling off the wagon.
"It's a precautionary measure, that's all," the source said. "He knows himself so well at this stage that he decided to take care of himself and check into rehab.
"He wants to stay on the amazing path that he's been on for the last number of years and this will help him do that."
She added that he was feeling "overworked", having filmed three movies in a row, and simply felt like he needed a break.
Farrell has checked himself into the celebrity-favourite, The Meadows centre, which costs up to €30,000 a month.
Previous celebrity clients include Elle McPherson, Selena Gomez and Kate Moss, and it is credited with being one of the best in the business.
Patients staying there can do a 45-day treatment plan called the Gentle Path, where they are encouraged to confront their demons.
Thanks to his reputation for hard work in the movie industry, Farrell has been employed steadily for more than a decade and has one movie, Widows, due out this year followed by a second, Dumbo, next year.
The Castleknock-born star, who has two children, James (14) and Henry (8), decided to enter rehab after Miami Vice finished filming in 2006, saying he had reached a brick wall.
"I had just had it. I was done. For a long time I put the brakes on," he said. "For a long time I could go mad for three, six months, and then I could pull back for a few months to try to re-enter the atmosphere. I couldn't find the handbrake."
However, the star said that living in California was a good place to help him stay on the straight and narrow.
"I'm not talking Hollywood. Hollywood is a state of being and also a zip code, but Los Angeles is a very forgiving city. You can be whatever you want," he said.
"It's actually a good place to reinvent yourself. Los Angeles is an incredible place and there are incredible support groups.
"There are alternative ways of looking at things. There are people from all over the world, so there's not one particular behaviour that's followed."