I couldn't really tell how hard it is because I really enjoy my work,
But I also consider it as a hard earn money since I also spend time and effort for it.
But this wouldn't really stop me from gambling because if I am being stress out from my work or family problems gambling is one way to relieve the stress.
It's hard to earn money but it saddened when your hard earned money loses in gambling. If in gambling gives you an entertainment it's good as long you have discipline in playing and have a self control when to stop when in lose. Just manage wisely your money for you to avoid big lose when playing.
If he is being stressed from his work and he decided to play gambling, I think that can give him more stress because if he loses, he will think about how to get the money. And if he cannot do that, the tension of the stress will become higher, and I cannot imagine what would happen to him if he cannot control himself to get out of gambling before he losses more money. It is better to have another way to relieve the stress, so we don't have to get another stress by losing the money in gambling.