Don't Stop Believin'The long awaited memoir of Australia's sweetheart, Olivia Newton John, covering everything from Grease to her journeys with cancer to her tireless charity work. My mantra is simple Don't stop believin'! For more than five decades Olivia Newton John has been one of our most successful and adored entertainers. A four time Grammy Award winner, she is one of the world's best selling recording artists of all time, with more than 100 million albums sold.