Shah Rukh Khan admits he has never felt complete as an actor and that's what has kept him going for almost three decades in the industry. The 53-year-old actor says, rather than looking for the end result, he believes in quietly celebrating milestones.

“I have never felt complete. As an artist, I am very incomplete and I know that. If I am not, then I would not like to work. If I am complete then why would I wake up in the morning and work hard and still try to do something?," Shah Rukh said in a group interview.

"I always think, within the commercial cinema set-up that I am working in, how can I bring in something new, as an actor, as a producer, in whatever capacity I can. I am not complete at all, I am very restless. If you think you are complete, then you are boring, over and done with!"

The issue with looking at things in life as a finish line, according to Shah Rukh, is what does one do when they cross it.

“So, I don't think of things as completing. As an old saying goes… the journey is important. If I cross anything, which I think is a good achievement then I don't think of it as an end-line, I think of it as a milestone.”

Shah Rukh says the films that he is currently doing, he is loving them as he isn't looking for an end result in the projects.

“After 25 years of working, I have realised that the only reason you should be working is for the happiness of your heart,” he says. His upcoming film Zero, directed by Aanand L Rai, aims to celebrate the incompleteness of people.