Life is short, so it’s important to live it to the fullest, and a 100-year-old has shared exactly how to do that. Australian centenarian Eric Ernest Munn uses a famous quote he read years ago to ensure he gets the most out of life. 100-year-old lives by famous quote“There are three little lines, I read them in a book years ago,” Munn said during an interview for the Australian chat show The Project. He then recalled the quote: “Yesterday is history. Tomorrow is a mystery. Today is a gift.” The eye-opening saying shows how yesterday has already happened, so there’s no point worrying about it. T…