Having self-control in gambling is very important, and it is the tool that can guide us to bet with the money we can afford to lose because no matter what happens to us, we will never be moved to chase our losses because we know when to stop gambling if we are losing too much money in gambling. Gambling has a spirit that influences people to keep on gambling even when they are losing heavily, so I understand not every gambler can control themselves and stop gambling at the time when they are losing so much money in gambling. It is only when they finish all their money in gambling that they will realize that it is not good to chase losses when gambling.
Building self control from beginning will help someone to have a strong hearted when playing gambling. He will not trying to bet with more money than he can afford to lose because that can make him lose much. Whether he is lose or win, he can accept the outcome and will not trying to recover his losses when he lose but he can walk away from the casino and forget his losses. To be clear, gambling can tempting people to keep on gambling without realize that they must stop gambling immediately before something bad happen to them. They can be wise treating gambling as an entertainment so they will not chase the win.