You can still quite even if you are addicted as the are many addiction remedies online for free and you can just help yourself by just used Google.
I guess that wouldn't be easy doing by yourself, the big problem here is on how an addicted person to willingly change his life.
What we can read in online is just a procedure to follow, but how can a gambler follow if he is not willing, I say, he need some help from other people around him, people who understands his situation as he cannot do it alone.