Sonam Kapoor, who has garnered positive response for her performance in `Raanjhanaa`, says she is surprised with the film's success, but admits she won't let success go to her head.

"I am very surprised but I am happy over the success of my film. I have got very good feedback for the film. But I don't want to go crazy about it. I want to keep my head down and be modest about it have some humility and hope the next time I don't let them down," said Sonam.

`Raanjhanaa`, directed by Anand L. Rai, also features southern star Dhanush, who made his Bollywood debut with the film.