What would be better to embark on first? The (in my case) 9 Bread Units diet/lifestyle or the UltraMind diet?
Well, I can only tell you my personal experiences of what worked, if you are having trouble starting out, reducing vegetable matter slowly might be a good way. I never like to look at it in terms of carbs, instead I think of it as reducing vegetable and protein matter and increasing fat. Counting carbs is a fools errand, they are concealed in everything and are everywhere, it's just so tiring, and also, is something easy to forget, especially when you face the rather compulsive nature of eating and snacking.
For instance, I often found myself half-way through a snack before even realizing that I was eating at all. I would be thinking of something else, a work problem or something, and just reach out and start snacking on something. There would be a chocolate bar left around and I would just break off a piece and start munching it.
So this was one of the problems I had to fix and I realized essentially that the no-carb/low-card idea wasn't a strong enough "thing" in my mind. It was too logical, and it was pretty easy to usurp if some part of me wanted to snack for comfort, or due to nervousness.
Also there's the idea that you can eat "kinda" healthy. But like has been said, that's like being "kinda" pregnant, you either are, or you aren't.
My personal, and unprofessional, opinion is: Eat only pork chops, fattiest you can find, and put some butter on them to make them fattier.
I am all about the simple solution, forget about the details and the reasons because in the end, your mind is really good at distracting you with minutiae and rationalization. With The List, you never ask: What can I eat? That's answered, eat pork chops.
But when you first start out, if you're a serious carb addict, it might be a good idea to just cut back on them, do it in stages. Cut out all grains first of all, then maybe stick to one or two safe veggies, like Green Beans, but don't boil or steam them, fry them with lard, and drown them in butter.
I personally favor an elimination diet, get rid of everything and find the 1 food you respond well to and stick to it. Variety be damned. So things that I did early on were eating lots of veal and veal soups. Usually you get fattier veal when you get the stew variety and it's usually tender enough to just fry up, or boil. Eat the fat, drink the broth, it's pretty soft on the stomach. Try to avoid all spices though, only use salt.
Those are just my two cents, but for specifics on technical scientific stuff, Ailen, Psyche and L have the best advice to give.