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.
Because of two things hoping to win the jackpot again and addiction, we are more addictive and motivate to gamble more because we have tasted winning the jackpot,we are not aware of it until we compute that we lose the jackpot that we've won.
It really hurt calculating what we've loss that what we've won, but if we are playing within our means and treat gambling as entertainment that will be our consolation, so don't expect because you've won the jackpot you've beat the house, because house will get it back eventually through time.