Yes, is almost the same thing with smoking and drinking. Because anybody that is addicted to this Three things normally find it very difficult in quiting them, because though once they are addicted to it in such a way that they doesn't have control over it again it will becomes a habits to them. And the most annoying part of it is that there is no amount of advice that would to going change them from their decisions, if they don't realize themselves.
Addiction is a disease that requires physical and spiritual efforts to combat. If you're battling any form of addiction, ask God for help.
Oh my God...so people have started resorting to spiritual means for addiction? Well, there's nothing impossible for God to do and nothing is too big or small to ask Him, so I buy your point even though I still believe all "can and should" be solved naturally without disturbing God for it. God has created it in us all already, it now depends on how we use it or feed it. If you use or feed your mind/willpower well, it will be useful for you to overcome, and if you do otherwise, you become weak. It's a choice!