Mischa Barton has considered quitting acting.
The 21-year-old actress - who made her film debut in 'Notting Hill' aged 12, before shooting to fame as Marissa Cooper in hit US TV show 'The O.C' - revealed her movie career has been an emotional roller coaster.
She explained: "I've grown up so much as an actress. There's been times when I've thought, 'I don't want to be an actress forever,' and there are times when I feel I can't live without it because I love it so much. It's a wild ride."
Mischa - who plays a former head girl in the remake of 'St Trinian's' and stars in the wartime love story 'Closing Ring' - also revealed she misses 'The O.C.' experience.
She added: "It's a bit like high school. You wouldn't want to do it again, but you get nostalgic about the experience."
The brunette beauty - who split from rocker Cisco Adler at the beginning of 2007 - insists she is too busy with her career to worry about finding a man.
Mischa - who has another four films coming out in 2008 - said: "I'm so happy I'm single."