Well the problem with most of the gamblers are that they become greedy on both winning and losing. Any win will not satisfy them as they keep on playing more for more profits. On the other hand, with every loss, they try to cover by playing more and losing again, making the loss even more bigger.
That kind of behaviour will really quickly lead a person to the path of addiction, we know that when we are gambling we are at a disadvantage and the casinos are almost sure to win on the long run, any gambler that is not satisfied with whatever profits he is getting and keeps betting will keep losing as well, at some point we need to accept our losses and the fact that we cannot be profitable when playing against the casino, but if you cannot do that it is better not to gamble because then becoming addicted is almost a sure thing.