Chloe Moretz says ''maybe later'' she'll go off the rails.

The 17-year-old actress is into healthy living and determined not to fall foul of the pitfalls of fame, so is steering clear of drink and drugs to ensure her career stays on track.

When asked if she plans to go off the rails, she replied: ''No, not now! Maybe later, who knows? But for now, I'm so happy with my life that I don't need to be rebellious. I wouldn't want to jeopardise what I've accomplished. I could do drugs and drink, but why would I want to do something that can strip away everything I've spent my life working for?''

'Carrie' star Chloe added she had a huge wake-up call about what was important when the health of her grandmother, who suffers from Alzheimers, took a turn for the worse.

She explained: ''I got this call from my aunt to say my grandma had had a stroke. Meanwhile, that day I'd been worrying about whether to book a project, an audition or a photoshoot. I just realised how idiotic it all is, cancelled everything and went home. This 'I'm fat, I'm skinny, I'm ugly, I have a pimple,' it's all so irrelevant.''