The winner will want to win more and the loser will want to get back the money they lost . Indeed , controlling greed and emotions in gambling is not easy and I don't see many people who will be able to do it .
I believe that most of us gamblers have a plan to withdraw money after winning big and leave a little to continue playing, this is quite a common plan . But one thing I see is that when people lose the remaining money, they tend to deposit more money to continue playing, so if we cannot control our greed, withdrawing money will not have much effect . So let's focus on controlling our emotions and controlling our greed instead of thinking that withdrawing money is a good plan, IMO.
That's normal if they wants to do like that because their greediness will comes and telling them to keeps playing gambling without thinks that they already gets what they wants. They must remember that winning in gambling is difficult and not many people will gets their luck and wins much money. They must realizes that is their chance to change their life to better with that wins money so they can have another source of income.
If they can't control themselves and tend to keeps playing gambling, they will see that they don't have a big chance to wins more money because that will depends on their luck. That's why if we wins much money or hit the jackpot, we must quit gambling immediately and not thinks to keeps playing gambling and chase more winning. We can use that money for many things and even we can build a new business that can generates more money to us.