This is my favourite book at the moment. I am not a writer, and so anything that can help me with making my communication clearer and more effective is worthwhile.
I have a blog article I've been working on for the last couple of weeks on StoryBrand and BrandScript that I will link to from this article when it's published early November.
Let's say Donald Millar is a legend and an excellent teacher regarding this sort of thing.
This month's mastermind also briefly mentions this book and some of the techniques behind StoryBrand's 7-step process to clarify your message.
Give it a look on audible or buy from Amazon, and you'll be blown away.