The first part of the introduction was about science, and the second part is about experience. All these things are discussed later in the book, but here are the things that really resonate for me:
1) we and others think our whacky behavior is part of our personality.

I thought I had a totally defective personality, and it turned out that the things I hated about myself were not actually part of my personality at all.

2) as you do the program, your "personality" shifts and the good part of sugar sensitivity emerges
I am actually grateful to be sugar sensitive, now that I'm not depressed and crazy anymore. Some of the qualities Kathleen mentions are intuition, creativity, compassion, tenacity, humor, thoughtfulness and skillfulness.

When I'm around people who are not sugar sensitive, it feels like there's a whole dimension of life that I experience that they don't. I don't really know how to describe it - maybe connecting with nature, animals and people on a deeper level? Eventually I will figure out how to articulate it. As for humor, I am convinced it is what kept me alive when I was totally miserable. I am really grateful for my sense of humor. It's not as dark as it used to be, now that I'm not so unhappy, but it's still part of my approach to life.

3) you don't need to work on changing all your behaviors or addressing your biochemical issues individually. If you do the food, the biochemistry will balance, and behaviors will change.

I have experience with this. Most of my addictive things were behaviors that were not around eating, for instance compulsive shopping. But when I addressed the eating, one day I realized that I had not shopped in a long time, and I had not made any effort to stop. That was one of the big aha moments I remember from those early days. The other was the day I realized that the voice in my head that constantly told me I was a loser was gone. It has never come back. That isn't to say that I never have negative thoughts, but this was a voice inside my head that heaped abuse on me continuously throughout the day, and it's gone. It has never come back, even if I have a biochemical blip. I am really thankful for that.

Allison