Beijing’s Golden Boy is writing a book.

Eight-time Olympic gold medalist Michael Phelps has inked a deal with publisher Simon & Schuester that will see the 23-year-old releasing his autobiography.

The World’s “Most Decorated Olympian” will get personal, chronicling his record-breaking eight gold medal wins as well as what it was like to be raised by a single mother while coping with an attention-deficit disorder, in a new book that on booksellers’ shelves this holiday season.

The star swimmer’s memoir, titled Built to Succeed, is due out this December.