They should know their boundaries and limitations as without following it, the very chance that they will just repeat itself and continue losing their money, the tendency is to keep pushing yourself finding your luck but due to uncontrolled habits, instead of quitting you'll going to push for more, those kind of situations are the factors that leads each gamblers to poverty as there's no more limits with their gambling participations.
If the gambler knows the limits of his abilities before addiction and tries to continue to be consistent in keeping with the allocation that has been prepared, the gambler will not experience losses that continue to deplete the assets he has.
But the situation will be different if the gambler is no longer in control of the finances he uses for gambling, then it gets worse when addiction puts the gambler in a more difficult situation. Everything will certainly be gone in gambling addiction.