Billed as a “warts and all” account of his life – the eagerly awaited memoir of Prince Harry will be published next year on January 10. According to the Duke of Sussex’s publishers Penguin Random House the book, called “Spare”, will be packed with “insight, revelation, self-examination, and hard-won wisdom about the eternal power of love over grief.” The book will be called “Spare” and is being billed by Penguin Random House as an account told with “raw, unflinching honesty.” In a statement released on Thursday, Penguin Random House drew on memories of the stunning 1997 death of Prince Harry’s…