...
Leaving on gambling isn't something that happens in an instant or even overnight especially for those gamblers who're already gambling for a very long time already.
...
Recovering from gambling addiction takes time, and will require a huge change on the person especially on the mental aspect. It's hard, but it's possible.
I mean, there is no wonder in many occasions interventions by professionals are necessary to keep gambling addict people away from casinos and curve their urges, if quitting gambling completely was so easy and it did not require intervention, then there would be less tragedies associated with gambling around the world, because those who give up to their urges and madness are the ones who end up hurting others mentally, physically and economically for the sake of continuing their habit.
In my opinion family intervention and follow up of those problems are very important, specially if one still live with ones parents are one is dependant on them. It is more difficult to get out casinos for long periods of time if one reaches adulthood being a gambling addict.