Hard to overcome it when you are surrounded with gambling sites online. You are not born to have a gambling problem I'm sure anyone who has addiction to gambling will overcome it when he lost it all. With not money but still manages to sell things just to gamble will result an addict to jail time. I don't know if he can gamble inside still.
There are a lot of people whom have lost so many money in gambling yet still gambles, and that was what he called an addiction. Yet, gambling often seen as curable yet it somehow was not in a way that it requires the same rehabilitation as what drug addicts do. No one can say that they would stop gambling for their family or for him to buy something big. There would still be instances that he would gamble some or even a little just to fulfill his satisfaction.