I get it....as you gain strength and confidence it will be easier to hold the line. We all mistakes early on, if you do just pick yourself up and move on. IMO though the set-backs do more damage than what we like to admit. Every time you do it just lets your W know you are still around. It is even worse if you string a few good months together and then backslide.
I struggled for the first 1.5 months but the last time I crumbled she really put me in place and I vowed to never do it ever again.