Dear Yossi,
It's difficult to answer your question with certainty. One thing is certain, however: It's important not to become complacent. So keep taking things one day at a time, and seriously consider joining one of the 12-step calls, two of which will be starting up again in around 3 weeks.
Don't worry, by the way, about feeling vulnerable. It happens to all of us. Personally, I was feeling weak on Motzei Shabbos and Sunday. But, Boruch Hashem, I was able to avoid giving in. How? The RBS"O gives us a tremendous gift: if only the Afterlife were at stake, few addicts would be able to resist giving in. However, being that it feels like hell on earth for days, weeks, and even months after falling, we don't need to be Tzaddikim to avoid falling, it's enough to be pragmatic and simply want to live a happy and, yes, pleasurable life.