Nothing is impossible. Any addiction can be cured with enough discipline and effort and time.
That is why prevention is better than cure, some will always say that they don't have the strength of handling addiction and that is why we had better not have it than taking a curative measure against it, because we can also learn form those addicted on other things in life and see out they use to behave or choose to live their kind of separate lifestyle, to fix addiction may come in much demands form us and the better way forward is not to be addicted right from the start.