doubting

I was all for this program and seeing the benefits right away when I first started.
I had read the book PNP and started all the steps at once including the potato. Because I was very used to disciplined eating, this did not seem too difficult. I had a binge after a few weeks , decided to slow down and have been doing step one for over a month. I am about to start step 2. I am having old feelings creep back in, particularly anxiety.
Because I had already started step 3, I am eating fairly well, although trying not to focus on that or any other step than what I am on, I have stopped the potato.

I am wondering what happened to my better, calmer mood. I am (very slightly) tempted to go back to my low-carb diet, and really want you to talk me out of it.
I feel that I need to just keep going but am in a bit of a slump, felling doubtful and hoping my enthusiasm and better calm feelings will come back.
I just ordered a subscription to both the journal and the shake- commiting in action if not in feelings right now.
Thank you for listening, any support would be welcome
Copper