Emma Watson has revealed she struggles to play angry roles.
The Harry Potter actress told a UK magazine that it scares her to let out the emotions she keeps bottled up.
"My acting tutor said the hardest thing for me was to get angry," she said.
"I almost broke down in tears when they tried to get me to be angry. I said, 'I can't do it, I just can't do it.'
"I keep all of that really bottled up somewhere and I feel unleashing it would be the scariest thing - and to let myself be powerful, sexy, all those things, it's scary for me.
The 21-year-old actress has played good girl Hermione Granger in the Harry Potter films for the last ten years, and admitted she has always been well-behaved herself.
She said: "There has never been room in my life for that [rebellion] - I couldn't imagine giving my family any more trouble, it's already been complicated enough.
"My dad is one of the top international-communications lawyers in the country, and trying to argue with him was a nightmare, so I learnt quite quickly to be good with words.
"My mum is an incredible woman. She moved back from Paris with my brother and me after the divorce, and worked full-time, supporting both of us.
"But I felt I wanted to take care of her - I didn't want to give her a hard time."
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