For me i have to say, 1. Made my childhood sweetheart stay and not move away. Ummm........ Kept my fave dog from deading. Kept my little bro from being born. Go bac to the first time a COULD have had my first kiss and get it(that hurted my high school life bad). Figure out why i dont like Chicken. Go bac to june 10 to pervent that bet i made with my uncle, about if i couldjump off a 5 feet high stair caased that sent me to the hospital.