The 27-year-old actress, who shot to fame in 2002 movie "Bend it Like Beckham", said she would quite like to have a job that allows her to spend more time at home, reported Contactmusic.
"I suppose I don't necessarily like the idea of doing the same thing forever. I love acting because it allows me to be different and have different experiences, but there is a similar strain to it all the time.
"Would I like to have a job that meant I could spend a lot of time at home and have a social life? That might be quite nice. But equally, I love my job and I'm incredibly lucky to have it. I just don't know if it will be what I do forever," she said.
Knightley said that she is clueless as to what she would do for a job if she quit acting.
"I haven't a clue what I would do if I stopped acting. But I can imagine at some point thinking, 'I've scratched that itch, what's next?' I've wanted to be an actor since I was three and for a really long time it was absolutely everything in my life."