The X Factor mentor Demi Lovato admits she has yet to start writing her memoir since landing a book deal because she's nervous how the public might respond to the details of her troubled past.

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"I'm battling with internal thoughts on how honest I should be. Yes, I've been very honest, but if people really knew how dark and deep my struggles got -- not just with my eating disorder but with drugs and alcohol -- they'd be really shocked," Lovato told Entertainment Weekly in its November 15 issue.

"But I'll most likely end up saying everything. Maybe it'll help other people in the industry who are headed down the wrong path."

Lovato entered a rehab program in 2010 because she was struggling with anorexia, bulimia, depression, drug abuse, bipolar disorder and self-mutilation. The 21-year-old reportedly lived in a Los Angeles sober facility to avoid falling back into her addictions this past January.

Lovato has seemingly been doing well ever since. For example, she spent her 21st birthday in August helping to build a new school in Kenya. 

"When I was in treatment, I honestly thought my career was over... It wasn't like I could discreetly make the choice to go into treatment... But when I came out of treatment, I had more supportive fans than ever... Now at night, I can rest on my pillow easy because there's nothing I'm hiding," Lovato told EW.

"There are lots of artists who aren't honest -- they put on a face. Nobody can relate to that face. Growing up, I needed someone in the public eye to look up to. At the time, it was starlets clubbing and getting really, really thin. That's what I thought was cool and glamorous. But now I want to inspire that young girl who thinks she's overweight, or too thin, or not pretty enough."

Lovato said she went through moments in her career when she wasn't a good role model for young women, but she certainly wasn't trying to be one at the time.

"That was my excuse to do whatever the f-ck I wanted and not give a sh-t about what other people thought. Then I ended up going through some stuff. I realized I'm never going to escape the fact that I'm in the public eye, so I might as well do the best I can," the singer explained.

Lovato, a former Disney Channel star, recently wrote Staying Strong, a book of daily inspirational thoughts for her fans. She has a supporting role on Glee and also currently serves as a mentor on The X Factor with Simon Cowell, Kelly Rowland and Paulina Rubio. The reality singing competition's next episode airs Wednesday night at 8PM ET/PT.
About The Author: Elizabeth Kwiatkowski
Elizabeth Kwiatkowski is Associate Editor of Reality TV World and has been covering the reality TV genre for more than a decade.