When people start to loose, they tend to be aggressive and bet more and while people start to win, they become overexcited and gamble recklessly as the luck is all in their favor. Be a person of reasoning and you'll always win.
This is the most common factor majority people will bet more into it when they start losing money and this frustration makes them lose more money through gambling. Frustration makes us lose more money in gambling, the only option we have is while losing we have to quit gambling for some time.
Quit gambling will be the best solution for gamblers who already lose money because they can take a rest in their home and don't think about gambling too much. They have another chance in the next day to gamble again, but that is not good for them because they will lose another money. Gambling itself is only a part of the entertainment, and many of us say that gambling is a way to lose and that is true.