The British actress has a string of Hollywood roles in the pipeline but is keen to be cast in a theatre production because she thinks that is where she does her best work.
She said: "The best moment of my career was doing `The Seagull` on Broadway. It was a couple of years ago but nothing`s topped it, the feeling of being on that stage. It`s so immediate and so consuming in a way that film isn`t.
"Film`s are so stop and start, and that often makes me act badly, or I just can`t forget that I`m being watched. But on stage, I`m blinded by the lights. I have a couple of hours and no one tells me to stop."
Carey also revealed she had to take singing lessons ahead of her latest role as extrovert Sissy in `Shame` after lying to director Steve McQueen about her musical abilities.
She told the Metro newspaper: "When Steve said, `Can you sing?` in the meeting I was like, `Yeah, of course I can.` I got the job and thought, `S**t, I have to learn how to sing.` So I had lessons."