Nikki Sixx‘s new memoir The First 21 has landed on The New York Times best-sellers list.

The book, which recounts the first 21 years of the Mötley Crüe bassist’s life, debuts at number eight on the Hardcover Nonfiction ranking, and number 11 on the Combined Print & E-Book Nonfiction tally.

“I am such a fan of books and storytelling,” says Sixx. “The whole process is extremely creative from the beginning to the end, which allowed me to open up candidly in the memoir about addiction, sobriety and reflect about the formative years of my life, while unpacking the complicated childhood that had some twists and turns along the way.”

He adds, “I am really happy The First 21 connected with people in such a deep way.”

Sixx previously earned the New York Times best-seller title with his 2007 and 2011 books The Heroin Diaries and This Is Gonna Hurt, respectively, and as a co-author of the 2001 collective Crüe autobiography, The Dirt.

In related news, Sixx is already working on another book, a children’s book co-written by his wife, Courtney. As Sixx tells The Aquarian, the book is about “this little girl who goes to all of these countries in her imagination.”

“She goes to Africa and she has this little African boy or girl teaching her about that culture, or she goes to England, and then she goes to Wyoming and learns about horses, then goes to Japan and learns about the food and the culture and the language,” Sixx explains. “That is a great idea and that will come out next year.”

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