Actually gambling is for fun. In gambling you either win or lose, so don't risk gambling. Now if a poor man bets excessively on gambling, he may be left destitute if he loses. On the other hand, if a rich person bets on gambling, he may lose the bet and become poor. However, if you are lucky and win a lot of money in gambling, now greed will work in you, you will want to gamble again and you may become addicted to gambling. Now if you have enough income then you gamble for fun but don't take excessive risk in gambling.
There is one thing I understand from gambling, you must take risk to gamble but the risk aspect is not what would makes someone lose focused because gambling is a game of risk. People risk money to get money meaning for one to become a gambler they must learn to use money for money otherwise it could be very hard but in a case were that person isn't willing to risk money then it could be hard for them to get money from gambling even if it's said gamble for fun and of course lots of people gamble to double their money.