"There have been moments in my life I was concerned by the reality that tomorrow would never come. Recently I experienced one of those moments to an intensity that brought on a sudden urgency to document my life before I ran out of time, before I had the opportunity to share an honest and complete account of my life, in my own words," said Twain, 45, whose marriage famously fell apart in 2008 after her husband had an affair with one of her best friends.
"There are times in your life that are meant for reflection, and this was one of them," she added. "I began writing this book with a sincere respect for the past, present and future as something never to be taken for granted."
In the memoir, set to be published by Atria Books next spring, Twain writes about her childhood in rural Ontario, the death of her mother and stepfather, her rise in Nashville – and the heartbreak over the breakup of her marriage. She has since found love again with Frédéric Thiébaud, the ex-husband of the "other woman."
"The book will be a help and inspiration to many," said publisher Judith Curr, "and those who think they know her from her music will be surprised at the raw and personal place she writes from."
The country star also has a documentary series airing on the Oprah Winfrey Network next year.