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Bertinelli, 47, who talked to PEOPLE in April about her weight battle, will write a memoir called "Losing It: And Gaining My Life Back One Pound at a Time." The book will be published in April 2008.
Bertinelli's memoir also will delve into her life as a teenage TV star and her 20-year marriage to rock legend Eddie Van Halen, which ended in divorce in 2005. But memoir will center on her challenges with weight loss and self-esteem issues.
"Writing a book is an exciting new adventure for me," Bertinelli said in a statement from her publisher, the Free Press.
In April, she vowed to PEOPLE that she would lose 30 lbs. by September.
"I need to do this in front of millions of people so I can't mess up," she said. According to her Jenny Craig blog – Bertinelli is the company's current spokeswoman – she's lost at least 23 lbs. so far.
With her Jenny Craig gig, Bertinelli took a step back into the media spotlight, but with her memoir, she says she's not afraid of opening the door to her private life.
"I've grown up in and out of the public eye, survived some tough times, learned some important lessons, and come out – as has my entire family – in a great place," she said in the statement.












