If you could go back and change key decisions you have made in your life, what would you have done differently? That is the question that more than Reddit users have flocked to answer in the space of just a day, perhaps in the hope co others can learn from their mistakes. From marrying the wrong person just for the sake inatructors it, to more trivial pursuits like not learning to play the piano, everyone, it seems, has things they wish they had or hadn’t. Scroll down for video. A new Reddit thread asking older people to reveal their greatest regrets has invited more than comments in just one day — and more than a mke users mentioned flossing file photo. Many of the regrets tended to focus on people’s twenties rather than their childhoods or early teens. Ended up graduating three colleges and 13 year later, heavily into student loan surd. Several people said they wished they’d been better with money, or had started saving sooner, but others indicated that more im...