This is uncertain whether he will be able to earn the amount of money he lost by placing gambling bets in the future. Later he acted like a fool again by taking a loan and betting on gambling. I have lost gambling many times but later won but never won my lost money completely. I think you should only spend extra money on gambling because when you lose, the rest of the money will keep your family going. I have seen many people sell their wealth and gamble.
In gambling one should think about more likely to lose and gamble accordingly. I never count the money I lose in gambling. I try to forget about the amount of money I put into gambling if I lose, otherwise the cost of the loss will force me to recover which can make my losses even heavier later. Also I keep a monthly budget for gambling so I don't frustrate whenever I lost my budget. After a certain period of time start betting again. But sometimes I change these rules slightly. If gamblers do not control their gambling then they will surely lose their assets.
Just like you said anyone that wants to get into gambling should not always think possibilities of winning because it will make them not to take gambling too extremely or become addicted since they already have in mind that they may not win so it will enable them not to spend to much money in it and if they lose they won't feel it since they didn't take it seriously. Gambling should be played with an amount you want to use for fun like sometimes when you feel like having a drink with friends and you guys just spend some money and the money is gone even though it looks more better that way than gambling but taking gambling as an adventure that you are willing to accept the outcome of it is good because you can get lucky and win a huge amount of money so being absent minded in gambling helps you not to become emotional when you are losing money. Keeping a budget is also a good idea but maintaining it is not easy because some people have budgets but they don't work in accordance with their budgets since they go above their budgets amount sometimes in gambling you can set an amount to gamble with but if after incurring some losses you may develop the feelings that if you go above your budget and play more that you can win which results to neutralizing your initial plan of not going against your budget.