The 47-year-old superstar, whose last release "Chennai Express" is one of the highest grossers at the box-office till date, said he is constantly working hard to sustain his place in the industry.
"I am scared of losing. I am scared of coming second. I am scared of not making it big. So, I have such a fear of failure that I work harder when even I don't need to. I work longer when I don't have to.
A star in the industry for two decades, Shah Rukh said that his journey has not been a cakewalk and he did face his share of failures.
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"Failures also gets you to find who your real friends are. The true strength of your relationship gets tested in the phase of strong adversity. I lost lots of friends post 'Ra.One', apart from losing a lot of audience too. And after 'Chennai Express', I haven't made any new friends but I have a whole new set of enemies now," he added.
Shah Rukh sported grey streaks at the event which he said is a part of his look for his upcoming Farah Khan directed film "Happy New Year".
"When I look at a project, I feel I don't know anything and I begin the film as a newcomer. I take it as my last project and give all my efforts to make it big so that I don't repent later," he said.