You can go back in time and fix the worst day of your life, but it will cost you seven years of life. Will you do it? Well, instead of just putting that arbitrary decision up for voting at a slumber party or WillYouPressTheButton.com, Fox has decided to make it a Will Smith movie. TheWrap reports Smith is attached to star in the studio's Selling Time, described as a "supernatural thriller" that "follows a man who is given a chance to relive the worst day of his life in exchange for seven years off his life expectancy." So you'd better pick a pretty awful day, Will Smith, because YOU COULD HAVE USED THOSE YEARS TO LEARN GUITAR. (That's supernatural thrill #1.) DreamWorks Television president Dan McDermott wrote the script, but there isn't yet a director attached.