Zac Efron has revealed that he has not idea what makes a successful actor.
The High School Musical star is back on the big screen later this year with his new movie Charlie St Cloud, and Efron admits that he does movies that he is interested in and is not interested in fame and fortune.
Speaking to Wonderland the actor said: "Everyone wants to know what the answer is but the problem is, I don't know. Nobody knows. All you can really do is follow your heart.
"I want to find things that I can bring something to, that are different, that are cool - for an audience today that's so intelligent. I know this audience, I've grown up with them.
"I'm a product of this generation and I know how smart we are. I know the material that we crave in movies today - we're not seeing a lot of it. It's unfortunate."
"We need to not be afraid to take risks in film; take cool concepts that might not be commercial but find a way to make them mainstream."
Charlie St Cloud, which also stars Kim Basinger, is the first movie for Efron since his comedy 17 Again early last year, but it's a change of pace for the young actor this time around as he tackles grief in his new film.
Charlie St Cloud is released 8th October.
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