Twenty years since her first single “I Wanna Love You Forever” hit the airwaves, Jessica Simpson is working on her most intimate project yet: a memoir.

Simpson opened up exclusively to PEOPLE about why now is a good time for her to release it.

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“I have been approached many times over the years about writing a book. It never felt right to me until this very moment,” said the 39-year-old singer-actress. “I have always felt that one of my God-given purposes in this life is to inspire people.

“I hope that by telling my whole story and not holding back I can help move people to walk through their fears and defeat their challenges, as I am working hard to do every day with mine. I hope readers will feel the love, laughter, tears, and truth contained in every page.”

The book, set to be released February 4, 2020, will share details about her life, particularly diving into her time on “Newlyweds” and her divorce from Nick Lachey. Simpson will also write about falling in love with her husband Eric Johnson and raising their three kids — Maxwell, 7, Ace, 6, and three-month-old Birdie Mae, and for those curious about Simpson’s billion-dollar fashion empire, details of her career.