I would like to specifically quote this sentence in your paragraph about not giving up. It is actually advisable to give-up in gambling especially when you are on a losing streak. Applying that kind of attitude which you just wrote, this would only cascade to financial problems and conflict. This would also give an opportunity to be addicted to the certain game if he has that mindset.

Like what you just experienced, gambling CAN be profitable if you know your limits and have self-discipline. The more you gamble your resources, the more chance that your money would be down the drain.