Michelle Obama’s book is on track to becoming the best selling memoir in history. Ten-million copies of her autobiography “Becoming” have been sold since it came out in November. The memoir details Michelle Obama’s life, from her childhood on the South Side of Chicago to her years in the White House serving as first lady. Bertelsmann’s Penguin Random House division published the former first lady’s memoir and reportedly gave her an advance of over 60-million-dollars for it. The publishing company apparently yielded a two-point-eight-percent gain in annual revenue thanks to Obama’s book.