i think there is no better way in quitting it, than just making yourself some target.
For example, today you are not going to lose more than 10$. Next day only 5$. etc,etc and you will get well.
it only reduces the amount of bets, if you get a win or lose I think you'll continue to play.
quit gambling takes time for them I am already addicted and they must have a new activity for at least one day not playing gambling. perhaps slowly, if done continuously can succeed.