I listened to the audio version which is great if you want to know what “fair play” is and the generalities behind playing it. An actual physical copy of the book would definitely be needed to actually execute the program.  
I will for sure be getting a copy so that I can introduce the concept to my partner and get it set up for our household. 
I only reason it didn’t get perfect stars is the slightly slow start. I get why she explains her personal story to reason the need for creating the program but I thought it took a bit too long to “get to the meat” of the book. I got a lot more frustrated with my own life listening to her “before” and had to keep reminding myself that if I could push through  and keep going she was eventually going to present me with a possible solution.