Zac Efron 'unsure of career path'

Zac Efron has admitted that he is unsure of the key to acting success.

In an interview with Wonderland, the High School Musical star said that he is not concerned with fame and chooses roles based on what he enjoys.

"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," he explained.

"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."

He added: "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."

Efron recently signed to star in the upcoming thriller Art of the Steal.