I had to stop reading when this book advocated letting your child get beat up by older children for being a "smart-mouth". "How to talk so little kids will listen" is a far more useful, caring book.

I didn't read the whole book, so I decided not to provide a rating. What I did read was good, there are some useful tactics in here. However, beware that there is a religious element to this book. I didn't expect that, and it isn't very clear in the description, but it's definitely in there.

Advice that's dated, counter-productive, even detrimental. Check out "The Whole-Brain Child" and "How to Talk So Kids will Listen and Listen so Kids Will Talk" instead.

from https://cupofjo.com/2018/04/best-parenting-advice-stop-saying-no/#more-158148 a reader comment

Solid Advice...
Much of what the authors say seems intuitive, especially about parental use of respect and self control. I disagree with the authors' thoughts on the role of self-concept though as considering all the kids I grew up with and all the ones I know now the effect of self concept is not anywhere near as cut and dried as they suggest. My experiences support the idea that a positive self concept can be present in either a respectful well behaved child, or a rebellious oaf. Additionally, I wish the discussion of modeling had been included in the first part where the 'techniques' are explained, rather than only in the second part with the examples (Pearls). My final warning is that the authors seem to attribute more complex reasoning skills to children at ages I have not seen children use those particular skills - however not at ages where they couldn't be taught them.
So, their advice is sound, but some (a lot, I think) kids may need more explanation than the parents in the examples give and the stories where the parent tries a technique once with excellent results are probably 'best case scenario' outcomes. Many parents may have to apply the techniques over many occasions to achieve success on a single issue.