There was a book that I read, when i was 'recovering' from my UD2 experience that really helped me to understand why my body was fighting me to lose those last 5 lbs of fat, and why I'm actually much better off not struggling to get rid of it - I highly recommend it for all women to read (since it's written about women). It's called 'Why Women Need Fat'. Reading this book really helped me to see why the more restrictive I was, the more my body retaliated.
One thing I've learned is that almost all of the diets and fat loss research studies are done on MEN. Women are excluded because their hormonal issues are so complex and so little understood that they prevent most women from losing fat in the way that men do. Since scientists don't want these 'abnormal' female results messing up their data, they routinely exclude women from their studies. They occasionally will allow POST-menopausal women as long as they are not on hormone replacement therapy, because after menopause, fat gain/loss in these women responds more similarly to that in men. Then, they release the results, and assume that those same results SHOULD be the same for women. Women get to feel that it's a personal failure if they can't lose weight following some 'foolproof' protocol that's 'guaranteed' (for men).
I've learned that i can't force my body to do what it doesn't want to do. So instead of self-flaggelation and self-hatred, I'm focusing on feeling good about myself, flaws included. At first, making that leap was difficult and kind of painful.
What really made me realize that it was time to let the obsession of those 'last 5 lbs' go was one night when my husband said, 'who wants to have sex with a skinny girl? NO guy.' That was a real shocker to me, and led to many discussions about how most men would actually prefer to have sex with a fat woman than a very skinny one. This got me questioning about why I was being so unnecessarily brutal in my critique of my appearance, when clearly no one else was...and i decided that I didn't want to live in a military state anymore. That's when the weighing of myself and logging my food obsessively stopped. Now, it doesn't even occur to me to get on the scale, which feels really good.