I have a friend that been gambling for decades already and when he decided to stop last almost 2 years ago, he did without much struggle in his part. Well, he transferred to Asia and happily married with a beautiful Asian now. I guess as long as you have that powerful will to stop you can and also when you have found more precious than gambling in your life then you are renewed
Well some people are not fortunate like him and does have a hard time struggling from their addiction, because not all gambler are like him that has a strong willed mind that can stop however he feels like it and I think that not all gambler can be addicted and not all was fortunate enough and ended up addicted to it!
Well if they really can't control themselves it is better if they are going to limit their money and don't use it for gambling. I know the feeling of being an addicted to gambling it is very hard for you to get out of it. Unless you are not willing to do it and you are not going to get some help from your friends that you know they can help you.
I think it is really hard for a person that is addicted in gambling to take away by his own his addiction because of the urge in the mind that he is experiencing well the only hope you can get is by putting your faith in GOD to take away your addiction from you, you can surely need help from your loving family to guide you from this problem.
Praying to God and asking for help on your problems in life would be very helpful , He would definitely guide you on how to solve your problems not literally but he shows ways but the important thing is you must help first yourself so that he could help you dont just pray without any actions done its still useless.