Post his debut film Saawariya, Ranbir has been tasting success film after film.
"I don't let success go to my head. It's (acting is) my job and I try to do my best," he said.
Ranbir will be seen sharing screen space with his actor parents - Rishi and Neetu Kapoor for the first time in the forthcoming film Besharam.
"I was nervous before. It's been 30 years, and even today main apne papa se aankhen milake nahi baat kar paata (I can't talk to him eye-to-eye). I'm quite scared of him.
"I thought how will I work with him and in this film. I have said things to him like - 'fat', 'dharti pe bojh' (burden on earth) and even abused him. My parents are so professional that when we are working together, they never make me realise that main tere baap hoon (I'm your father). They have encouraged me a lot," he said.
He also said that his parents keep their personal and professional lives separate.
"When they are on set they are something else. They never get their relationship on sets and don't take their characters back home," he added.
Directed by Abhinav Kashyap, Besharam will hit the screens on October 2.