Hmc, how are butcher's sausages and peanut butter white carbs? 
I only eat wholegrain bread (as we all do in this house, baby included!).
In terms of the broader discussion about permanent lifestyle changes, I personally don't agree at all that you need to do skimmed milk permanently to maintain weight loss. I think what each person needs to do is very unique and individual to them, depending on their own histories with weight gain/loss.
This is something I have learned over many years. I first had to lose weight way back in 1999 when I lost about 4 stone. I did this by doing old ww and being extremely religious about it, high exercise/very rigid dieting. Overtime, I lost the rigidity (because it's very, very hard to maintain and live any sort of normal and non-obsessive life) but I didn't regain very much weight at all. About a half stone. Those habits had become ingrained.
Before my wedding in 2007, though, I decided I wanted to drop more weight (as many brides do). About a stone. This time I didn't do any weightwatchers at all and didn't really change my diet apart from portion control and walking 15K steps a day. It worked and it, too, stayed off... until, sadly, I had a very serious asthma attack and was hospitalised for the bones of three weeks and put on serious doses of steroids for some time. This coincided with a lot of other stuff (estrangement from my father, work issues) and for the first time in all those years, I went back up to a weight outside my healthy weight range (12st 10, BMI 26.3) And then I got pregnant six months later (while dieting/ttcing) and added another nearly 3 stone into the mix!
It is now 12 years since my first diet. In that time, I've learned that I can stay at a BMI of roughly 23-24 (12-14) without having to take extreme measures but that going to a BMI of 21-22 (size 10-12) requires serious, persistent and extreme ongoing effort to the point it can take over my life. When all is said and done, I am only 10lbs heavier now than the day I graduated from university at 22. I have been lighter since then, but my "set point" is around that 23-24 BMI mark and as I get older/go through these baby making years, I am easing up on the desire to keep pushing for something that just doesn't happen without a lot of self-loathing etc.
Really, I have maintained pretty well. I have found that what type of milk/yogurt/cheese et I have makes sod all difference as I don't drink a lot of it and that eating low fat foods with artificial sweeteners in is a recipe for disaster for me becuase it makes me crave sugary things etc. I have found that a diet that is 1200cals or so doesn't work as well for me as one which is 1500-1600 over much longer periods of time. I had given up on regimented programmes like weightwatchers but I as losing weight while breastfeeding, I wanted something medically "okay" and found it actually worked fairly well with the extra points.
I think when you are prone to putting on weight, working out your own individual triggers is more important than all the science (and pseudoscience) in the world about GI/carbs/proteins etc. There are also the emotional aspects. I have also learned - and this is the crucial one for me - not to believe that my life will change radically whether I am a size 10 or 16 or even that I look that different and I have learned not to put my life on hold.
I know this is not always so easy to say or believe when you have a very sizeable amount of weight to lose but, coming from a morbidly obese family, I had serious image problems when it came to weight. Dressing in tents when I was only barely (medically) overweight and obsessing about not being tiny, refusing dinner invitations or sitting there eyeing up others' food while eating something I hated. I am also wary of the addictive nature of weight loss, the "reincarnation" feeling you get when you lose a stone or two and how the scales dictates your mood a a result.
For me, it has to be about moderation and I find that 36 points a week feels like moderation and 29 feels like deprivation.
As a therapist, we work in groups with people to help them find a "toolbox" of strategies that work for them in the long term. That's how I see all this weightloss stuff now. Each time you go through the cycle you can learn one or two new habits to take forward and also work out more clearly what you are and are not willing to do for a thinner body.
Sorry, that was epic 
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