Yes, it is always good to quit the gambling because if you are continously loosing through gambling it is good quit the gambling. Once you quit the gambling better dont reconsider it because you might loose more money.
Don't quit gambling completely if someone still wants to make money from gambling he can simply invest in the sites bankroll there are really profitable i had earned 0.1 bitcoin from all my investments in different gambling else you can trade also to increase your profit
If you want to quit from gambling you have to quit completely. If you still feel like gambling, you can not stop gambling. You have to do it totally, if you do it halfway, you'll just spin in a loop without stopping. Do your best or not at all.
There is nothing like making a decision and then just act on fifty percent of it. Either it is done or it is not. If someone has decided to get rid of gambling, either he will stay or he will leave. Even if he decreases his number of games or the time he spends on this game, he will be still counted as a gambler. And yes, only he can truly help himself in keeping this game away forever.