Jennifer Lawrence said she suffered from social anxiety while growing up.

The actress told French magazine Madame Figaro her nickname was "Nitro" (like nitroglycerin). "I was hyperactive, curious about everything. When my mother told me about my childhood, she always told me there was like a light in me, a spark that inspired me constantly. When I entered the school, the light went out. We never knew what it was, a kind of social anxiety. But I had friends. I especially think I do not feel smart because I was not a good enough student. ... I think some people are stupid, but eventually get out and I was one of those. (Laughter.)"

So ... what exactly is she talking about?

"I went to see a shrink, nothing worked," she said. "One day, I begged my parents to take me to a casting, we went to New York and that's where I started acting. Just on stage, my mother saw the change that was taking place in me. She saw my anxieties disappear. She found her daughter, the one who had this light and joy before school. I finally found a way, open the door to a universe that I understood, that was good for me and made me happy, because I felt capable, whereas before I felt worthless. This is why mom fought for me to be an actress."

Lawrence, who is out publicizing the new "The Hunger Games" film, told Vogue magazine last summer, "I was a weirdo. I've always just had this weird anxiety. I hated recess. I didn't like field trips. Parties really stressed me out. And I had a very different sense of humor."

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