I love the book. You are correct. I knew much of this already. But, it is an excellent reminder to be mindful about everything that goes into my mouth. I also like the concept, that our bodies can be fooled. By eating just a few hundred less calories each day, our bodies are not aware that we are reducing our food consumption. No starvation reaction. This makes some sense to me.
Incorporating small changes in my eating habits really is what this journey is all about. If I can re-train myself to eat the correct amount of food, I will be able to maintain this loss. Probably the biggest revelation to me through this process is how I got "fat" over 8 years. An extra 100 calories a day is all it took to put on those 80 lbs. I WASN'T eating massive quantities of food. But a 50 year-old doesn't burn as many calories as a 20 year-old does. I never adjusted my calorie intake as my lifestyle changed. DUH! Sometimes you CAN teach an old dog new tricks
This book is a more "practical" approach - skimming the surface of why we eat what we eat. Beck is a more in-depth approach, a cognitive therapy approach, with a structured plan.