This was a fascinating book on how to change behaviors in a group of people. There were plenty of great ideas here, such as 1) make sure you identify the right behaviors to change, 2) identify current barriers to the desired behaviors, and 3) figure out how to make it both easy and worth it for people to do the right thing.

Although the book focused on "behaviors," it was very clear that the authors had much more in mind. They're not simply seeking to manipulate people into acting a certain way despite their own desires or values. Rather, it is clear that the objective is to change people's hearts and help set them up for a healthy life.

That said, as a Christian, I still found that many details needed to be sifted and evaluated in light of the Bible. Also, I found the stories to be a bit tedious. The book began with tremendously engaging stories. But it got pretty old when they came back to the same ones over and over again to make their points. I would have appreciated the book more if it was about half as long as it was. That's why I only gave it 3 stars.