I am kind of glad you posted about this because I am kicking myself for sliding off of my treatment plan. Whenever I make a move to a new place (from apartment to dorm and meal plan) I seem to lose control. I have only known about the candida for less than a month, but within the first two weeks, I felt nearly symptom-free!! But living in a dorm and being on a meal plan for summer is really hard because on top of the candida restrictions, I am also vegan. It causes me to feel anxious and stressed out because I feel so separate from everyone because I don't eat the things that they do--which is a big part of the social sphere. If it was solely because I am vegan that I can't share the same food, I would be fine, but the candida restriction on top of that is just too much and within a week I think I have lost all the headway I made. I just hate myself for it. Not much comfort, but you are not alone, not the only one that has back-tracked.
As far as curing candida for life, I think it is possible to get it back to normal levels, but we have to make permanent lifestyle changes so that whatever behaviors got us into this mess in the first place don't cause a repeat.