Mila Kunis always thinks she is going to get fired.

The 28-year-old beauty rose to fame on 'That 70's Show' at the age of 14 and has since starred in movies including 'Black Swan' and 'Forgetting Sarah Marshall', but she admits she has never been confident of her acting ability.

She told Total Film magazine: ''I think that every movie decision I make is going to be a mistake. I'm always in fear of being fired, always in fear of something happening, constantly. All I have is my gut so I just follow my gut. It's gotten me to where I am today.

''When I decided to do this for a living, I said it would be for the right reasons - which is to do things that make me happy and do projects I'm proud of, regardless of the outcome.''

Even though she worries about her acting abilities, Mila doesn't mind getting bad reviews.

She said: ''If you feel you deserve to hear how great you are, you should hear how f*****g s****y you are. And I don't want to hear how s****y I am.''