In the space of a few months the purges came less strongly and less frequently, I could have a few weeks feeling great and then when I felt rotten, it was pretty easy to deal with as the intensity was way lower than before as so much had been released.
Then the point came when I felt real freedom, the anxiety was all but gone, the racing/fearful thoughts all but stopped.
It has got rid of a whole chunk of energy and then if you allow it, you can have a period of bliss after, some of my most blissful experiences came after the toughest releases.
But I knew this was not the end, I knew the body would go through another purge and that was fine, in fact I looked forward to it in a way as I knew this was were progress was really at, feeling bad meant more was being released and I wanted it gone.
So yes setbacks are a good thing, what most people do when they have a period of feeling good is think they have cracked it, that it is all behind them, I have seen this so often.