I doubt that you can stop gambling when you are addicted since it’s very hard to notice the symptoms due to the addictive nature of gambling. The only way for a compulsive gambler to stop is if someone help him to change or he doesn’t have any money to gamble.
If someone is going to help change the gambler is a plan that's very hard, unless the person acting as the helper will devote 85% of his or her time for the addict, because is like a kid that you monitor 24/7 so he (gambler) can't go offline.
And we know how difficult it will be because you as the helper can't have that comfortable time for yourself. Keeping an eye on the gambler has to be under strict rules, no messing around or having pity for him or her. So I can't say is going to be very easy to accomplish.
Monitoring the addicted gambler 24/7 is unnecessary. It's up to the gambler whether he will also help himself to stop gambling addiction or not. Also, this kind of concern requires a specialist. The person addicted to gambling needs counseling. Someone he can confess everything he feels while playing.
But as I said, the gambler is required to help himself. For this reason, even if counseling was done, it would only be put to waste if the person addicted to gambling still continued to gamble. Whatever help is received, it's all up to him if there will be a result or not.