Currently, he is busy shooting "P.K.", starring Aamir Khan and Anushka Sharma in the lead.
"I don't think any of us is running a race. I don't think I am running a race with any other director or his films... I don't think we are in a race at all," Hirani told reporters Saturday at the launch of a CD on positive thinking - "Raageshwari Narrates Daily Affirmations by Louise Hay".
"All of us are saying stories, which are completely different. If we say good stories, if it connects with audiences, all the films will work. So there is no race," he added.
According to Hirani, there is no formula to make a successful film.
"I don't think any of us can make a formula. If we could, then every film would work. So the best thing is not to worry about whether your film will work or not. Try and make what will work for you. So my effort is to try and tell a story that works for me, I connect with, and which I believe in," said the 50-year-old filmmaker.