"I do believe that an actor, who is self aware, will never do a film that is not an extension of his personality," Shah Rukh, who has acted in more than 75 films, including romantic, action thrillers and dramas, said.
He shared his views while in conversation with lyricist Prasoon Joshi at an event where he was honoured with Rajasthan Patrika Concerned Communicator Award.
"No matter how good I am as an actor..I can do this role also, that also, I can also prepare...lot of things I can do to change my personality and be in the role that I want to be. But as hard as I will try, I don't think it can ever go beyond my upbringing," he said.
"So, somewhere I feel that my upbringing is very simple. My parents have taught me good things, personally I shy away from talking something wrong," he said.
In his glorious career Shah Rukh has essayed negative roles in 'Darr', 'Baazigar' and 'Anjaam', and later earned the tag of 'Badshah of Romance' by playing a perfect lover boy in romantic films like 'Dilwale Dulhania Le Jayenge', 'Dil To Pagal Hai' and 'Kuch Kuch Hota Hai'.
He was also lauded for doing films like 'Swades' and 'Chak De! India'.
The actor said that his personality reflects in the kinds of films he does.
"I can't say some things in the films. I feel that it will not look good when I will watch them with my kids, even alone. There is a natural censorship inside my system," the 47-year-old said.
"But having said that, I don't know if that censorship is so personal that it may happen, especially my sense of humour, that people get me wrong, it hurts some sentiments, it disturbs lot of people," added the actor, who has been involved in many controversies also.
Currently, the actor is busy promoting his forthcoming film 'Chennai Express'. Directed by Rohit Shetty, it features Deepika Padukone as the female lead.