Yah, the premise is a great one. And I'm sure there are 250 scenarios in the book, all of which I skimmed through and none of which applied at all. She must have some pretty nasty friends and family based on the scenarios in the book. Wow. And co workers.
The scenarios were of no particular help particularly because there was little to no follow up offered. When you have a sister (this is her example) always dumping her drama on you so you say "Sorry, I've got my own drama to deal with" what do you do then? You can't just hang up on her! That's rude! She's bound to ask what your drama is...
I found most of the scenarios to be that way. Basically you just say no and then hang up, don't respond or walk away, which isn't how the world works. That's how rude people work.
So, I feel like I'm pretty good at maintaining personal boundaries and this book did nothing to add to my skills of doing so. Don't waste your time.