alright, so if I'm understanding the "question" it's how do you stick to primal, especially coming from vegetarianism?
Well I stopped being vegetarian several years before going primal, so can't say much there, but I have had terrible GI issues since I was a teen (15+ yrs ago). Primal is already helping with those. The sticking to it part for me is 3-fold
- resource - forum interaction (including a daily journal) and reading the MDA blog
- provision - always having primal foods readily available
- motivation - taking time daily to actually notice the little ways I'm already feeling, looking better and thinking about how much more badass I'll be after a year of primal (only 3 weeks in now)
There's no magic trick or cliche to tell you that will help you decide that being primal is worth it for you and you should stick to it. There are tons of support resources, the MDA site, the PB book, the forum, tons of blogs, but the bottom line is you have already seen the benefits of Primal for yourself, so if those benefits outweigh your desire for SAD, then PB wins. If you can't push through the cravings or what may feel like some extra work on the front-end while you're adjusting to PB, then SAD wins and that's truly sad. Not that PB might not initially suck at times. I went through carb flu the first week and it almost derailed me, but I pushed through and my GI, and the rest of my body, thanks me for it.