This book offers some quite useful insights concerning the possibility of the career change,. It covers a wide area of aspects including the financial/money-concerning ones.
This is a coaching-style book written with somehow holistic approach, which might be or might not be your style.
Does it work for me? Partly. The authoress has a background in psychotherapy and it shows (in both plus and minus side - taken from my personal point). Plus side - the authoress is able to ask some very good questions and shine light on some matters that are on stake for me. I have been reviewing (and even readjusting) my attitudes during the reading and I have been able to explore and find out some issues I need to work on. I am thankful for that insight.
Minus side - the therapeutic style/guidance of asking your reader the questions and lettiing him to find their own conclusions might not work for everybody, as it lacks a bit in offering the practical advice, concrete steps and solutions.

Having said all of that - I can recommend this book, but not as a sole source to read while considering change (be it career or other change) - it would work better as a part of the bunch of sources. Pick various titles and take wisdom from more resources that just one book. And definitely read one aimed to provide "hard", practical solutions - and the combine the sources to what works best for you.