The lessons mentioned in that book are so true. And while I haven't read it, I did end up building systems of my own that actually worked.

Example: When I wanted to lose weight, I found out that drinking several sodas a day was a bad habit. So I didn't stop drinking the overnight, but slowly phased them out, while folding in juice and flavored water, then finally, clean distilled water (which everyone should be drinking).

I was having a tub of ice cream every day which really helped to put on the pounds. So I started an, ice cream>frozen yogurt>flavored yogurt>plain yogurt (reducing the sugar level with each step.

Again, slowly over time and it worked.