Try having a withdrawal therapy like the ones who undergo drugs. Minimize your gambling activities little by little until your urge to gamble is gone.
Yup the urge in gambling is just on your mind try to just refresh your head with no gambling on it, me I don't think im gonna be addicted with just gambling I play gambling yes but in moderation.
Gambling is good when you play it or treat is just for fun, but if it becomes addiction then it would be really difficult for anyone to quit it so easily.
But you can't deliberately be addicted to it when you are having fun, for a normal person when he is not gaining any money from it he will just quit it or just play it in moderation because of the involvement of money, but when a persons mind is not stable for it he might find himself very addicted to it and he needs physiological attention towards it.