So I caught my friend up having gambling as a source of making incomes.
A situation that is not really unusual. The possibility of gaining money is the main reason on why new/old gamblers are tempted to use their money in gambling. Then, if the outcome is not what they expected it to be, that's the moment they realized their mistakes.
Just in, he is on medical attention after he slumped as a result of loosing a borrowed fund meant for a business re-startup after the gamble made him squandered his previous business.
At his regained to a normal state of health, he explained that he thought he would be lucky to win at the stake so as he could expand his intended business with a bigger capital.
There's nothing wrong if we try our luck in gambling. However, it is wrong to have a high expectation to win and worse if the funds you use are a borrowed money. A greedy gambler will likely end up like this. Sometimes you have to experience it yourself before learning a lesson. But of course much better to become aware of the worse case scenario before trying to use your money in gambling. Don't gamble hoping you can double your money in snap, that's not often the case.