Oh peace. I felt the same after mine. I was actually more cross about the home-birth push, but that's another story....
Take it all with a pinch of salt. Breastfeeding worked for me, despite the crap pushed by NCT and not because of it. If it works for you, then great and if not, it really honestly is not that big a deal.
I know that sounds like patronising shit, but 5 years down the line it really doesn't.
I think you either have the kind if mind that doesn't mind bring fed all this NCT stuff or you don't. I hate being lectured to and I agree the NCT doesn't always approach a lot of it the right way.