To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness.
Although I haven't finished reading this book yet, the part I have completed is more of a textbook for background in counselling. If you are looking for a practical, nitty-gritty book to help with counselling, this book is not it.
This is a good resource to start with, but it may alienate those not embracing the Christian beliefs. Like with any other book, take what works for you and leave the rest alone. The exercises are helpful - whether pre-marriage or even post-marriage.