I agree that treating addiction isn't easy, but you have to find many strategies to do it, the first is what you said responsible gambling starts with simply controlling money
Seriously gambling addiction is just self control, if you can’t control yourself then thats the beginning of the problem. If you are a gambler, always make sure you set a target for yourself, and make sure you work with your target, don’t go against it no matter how you are pushed to do that.
As a gambler, we are just suppose to be gambling for fun, and we are not suppose to be gambling for the sake of money, as long as you are having the mindset that you can make money from gambling, then that means you are already getting addicted to gambling, because you going to be chasing the money always, and you will find it difficult to stop gambling even when you are suppose to stop. If you are gambling just for fun, then you will be able to control yourself. It’s difficult to stop addiction just as you said, so the best thing is not to get addicted at the first place.
Setting a limit to gambling is also a very important aspect because many people today who are gambling and falling into addiction is as a result of not setting gambling limits or even do not gamble apply responsible gambling practices, when you see someone who gambles responsibly you would noticed that they usually have limits to gamble and when to stop without overly gambling excessively.