Emma Watson has admitted she really pushes herself to be a high achiever.
The hardworking Harry Potter, 22, star reckons she learn the trait from her mum and dad.
My parents have very strong work ethics and have instilled that in me; a love and a respect for what you do and taking pride in it,' she says.
And then - and this is sort of irritating at times - I'm a bit OCD about perfectionism.
I'm my own worst critic. I always want to do better. I'm always striving towards the next thing.'
But the pretty actress believes that knuckling down at Brown University in New York - where she's thought to be reading English - offers some relief.
I think having time to step away and study really, really helps. It helps to give me perspective on things,' Emma tells Marie Claire magazine.
To be around people who are living their lives in different ways, who have different aspirations.