[now__what]

No worries :) I mostly agree. With the caveat that, IME, it's easy for one bad "trigger day" to throw you completely off track, and perhaps lead to the full "relapse" you describe. Certainly not in the same sense that heroin or gambling could do so (unless maybe you have a food addiction).

One of the core skills of keeping any daily habit is to not get so discouraged by momentary lost progress that you give up the whole game; but that's easier said than done.