Usually winning will become a temporary thing that we get if we can't stop while we are ahead. The intention to continue playing, mostly, will lead us to lose our winning money back to the casino. That is why most gamblers have a bad portfolio in the long run. I myself experienced the same thing. When I am able to get a relatively good amount of money through gambling but have to lose it again at the other days.
I remembered something about gamblers winning mostly in lotteries wherein the money you won in that kind of way has a curse. Usually, the money they will get will not last and usually will end up giving you bad lucks in the way. I don't know if this is true but can someone share any experiences about this? This can also be related to winning a huge amount in gambling, right?