32 Days In and Fighting Self-Doubt

I'm currently 32 days into TMS journaling, and I'm experiencing my first wave of self-doubt. A bit of backstory, I was diagnosed with Mast Cell Activation Disorder 4 years ago after having a few episodes of out of the blue anaphylaxis led to seeing a zillion specialists. I was having literally dozens of symptoms, which do align with the diagnosis I was given, but it's important to mention that I've had migrating symptoms since childhood that would come and go. I totally fit the TMS personality Dr. Sarno describes, and the first episode of anaphylaxis happened about ten minutes after an emotionally traumatic experience. The following year, I developed severe pain in my feet and after a week of hospitalization was told that I have idiopathic peripheral neuropathy (doctors were divided on whether or not it was part of the Mast Cell Activation Disorder). I was almost totally bed-bound for over two years.

Long story short, my health has improved dramatically over the past year! I'm no longer in bed except to sleep at night, I can walk about a mile, and I'm starting to work a few hours a day again. Just over a month ago I stumbled upon TMS videos on YouTube, then got The Mindbody Prescription. I've been journaling every day, and I have seen some reduction in pain (it's always there, but no longer keeps me up at night) and the insomnia I'd been dealing with has gone away entirely. However, I've had a flair of some of the symptoms associated with Mast Cell Activation Disorder. I've been trying to tell myself that this is a good thing, it's just the roving symptom phenomena, and oftentimes I believe it. However, I have noticed some doubt creeping in from time to time. I think it's partially due to my perfectionist nature that convinces me I should be further along (or completely better) by now. Any tips for how to banish this sort of fear and doubt?