Actress Cameron Diaz says she was "so scared" to release her first self-improvement book.
The 44-year-old actress said she felt debilitating fear prior to sharing the "The Body Book: Feed, Move, Understand and Love Your Amazing Body" with the world in 2013 and its stress made her ill," reported People magazine.
"Right before the book came out, I was on my back for a week. My back went out. I couldn't breathe. I've never had that kind of thing where I was just literally debilitated.
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The actress said writing a book has taught her a lot of things about herself as she was so "raw", while writing it.
"It was revealing about, who I was. Movies are like totally fake. It's not me at all. It is, but they're characters. This book was all me. There was no hiding. I was so open and so raw," she said.
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