Since time travel is not going to be an option within your lifetime, you despair of ever having your wish granted. Tired of not getting your way with anything, you decide to become a Mormon. You really get into your new religion, you love giving orders and making things happen and after many years you eventually rise to a very high position in the Salt Lake City Temple. Your word is law, you are considered a very holy person, and when you die you definitely go to heaven with a fast track for advancement. After several millenia of increasingly impressive reincarnations, you reach the ideal pure state of being which all Mormon men may aspire to and you become a god yourself, with your own universe and the works. One day, inbetween creating planets and people to worship you, you suddenly remember that long-long-ago concert by the Eagles. Ah HA! Now you are God and you can go back and watch that concert in person, just like you always wanted to. So you do
I wish I could get 8 hours of sleep every night and wake up feeling perfectly well.