As said before 52lb a year is a great loss - it is 3 stone 10lb!!!
I think if it comes off slower (as it did for me - I lost 1/2 - 1lb a week following the plan 100%) you do have time to learn the habits that will keep it off long term. If it came off really quickly, the old habits would be very quick to return - as would the old weight
Right, that's the feel good stuff out the way - I actually have a long period of first hand experience that also agrees that it is
really frustrating week after week - there always seem to be people in class who 'eat rubbish' or 'cheat the plan' and they lose loads don't they?! arrrgh - I agree, it is enormously frustrating being a 'slow' loser, despite knowing that it IS coming off ('better than on' bla bla bla) ...
I think you are right to want change the food you eat, to try and find different things that you enjoy, to experiment a bit - If you are going to see this through, you have a real chance to change your eating habits for good.
Perhaps keep a diary for a week, and check that you are still doing everything right, perhaps fill out an SAS log, just in case ...
but hey, <hugs> AND well done - it was a lb off after all <clap clap clap>