You're brave to come back here to us, Flo! I'm proud.
The truth is, those feelings and notions never subside. We're never completely free of the "mental gymnastics". Even if we never look at the labels as anorexics it's almost in-built that we know the general nutrition of things and as such we'll never be ignorant to that.
You'll continue, even when getting better, to overestimate to compensate... even if you don't realise it.
"Okay, I've to eat 2000 kcals today. I ate a Special K Bar, that's like 100... and an apple... it was a big apple... probably close to about 70kcals... and then a couple of slices of wafer thin ham on that sandwich... ham's like 15kcals per slice, so..."
Even though you know the EXACT nutrition of a Special K bar is 80kcals, you round up, and round up, and the ED "tricks" you without you even realising. At the end of the day you can't figure out why you're eating 2000kcals and not gaining weight, and then you realise you've tricked yourself out of like, 200-400kcals by the end of the day.
How beautiful a world would be to go into a sandwich shop and buy what looks tastiest. Even now I go into Subway and I'm like, "do I want a six inch 210 kcals or a six inch 255 kcals today?" instead of "Veggie Delight" or "Turkey" or whatever. It's frustrating, but we must remember an INCREDIBLY important point:
THE BODY MUST HEAL BEFORE THE MIND CAN HEAL. IT DOES NOT WORK THE OTHER WAY AROUND.