Actress Maggie Gyllenhaal is attempting to quit smoking again after picking up her old habit on the set of a harrowing new movie.

The SECRETARY star is proud of her work on SOME KIND OF HEAVEN, in which she plays a young mum trying to piece her life back together after a spell in prison, but she admits the experience took its toll on her.

She explains, "I was ravaged afterwards. I was playing someone who was really broken and really struggling, and I totally took it on - I even started smoking again.

"It took me about six weeks afterwards to get over it."