They are numerous stories of people who won the jackpot and ended up spending the whole money back on the casino within a short period, 1 or 2 years, they lost the jackpot.
I've heard countless stories that those people who have won the lottery in my country ended up with nothing just after a few years. Note that they've got a huge winning around $270k in today's time and they've just spent it all within less than five years. It was from several years ago and then inflation back then wasn't that much and that amount is really quite big to spend with. The saddest story that I've heard, that lottery winner spent all of his winnings from luxury and didn't even managed to save for his future.