I think, those who are negatively impacted by their gambling, Usually they force themselves to play again to get a much bigger income than before. Usually these gamblers have high enough self-confidence so they keep playing again. In my opinion, this is carelessness or greed that occurs in every gambler. If we have made a profit, it would be better if we don't repeat the mistakes that happened before, we should stop and take the profit home and enjoy it.
People that have give to much concentration for gambling are those that are feeling the negative impact. Because instead of them to rest when they lose money but no they will want to make back what they lost and they will keep playing and before they realize that they are going to extreme just because they want to make money. Making money you need to know what you are investing and that you are getting in return not just spending and not get anything in return.
Their confidence is always coming from their first win, that is why they always continue playing because they have the belief that they will win big and they are forgetting that even when they win some will still spend their money extravagantly they buy things they don't even need. Gamble with budget and the truth is you must not even gamble every time. At least to safe your self losing money.