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in most cases, gamblers who can't move forward will be more aggressive in trying another shots and ended up losing more.
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the best solution in this case is just stop gambling at least for some months because it has become a negative and no longer pleasant experience. It is practically impossible to be able to recover such a large amount by "winning". On the contrary, it's relative easy take a greater risk by chasing the winnings.
Actually have some gambler mind when losing on casino try to recovery on next casino games, they not try for stopping because always have faith can recovery with how much loss by winning on gambling again. Although impossible they not care and keep borrowing much money for active on gambling and try recovery with how much loss before. Better with stop after losing much on casino gambling and finding new way for recovery with how much loss is better than try gambling again and loss much money on casino gambling.