I think that this book will either hold immense value for you or be a book that repeats well-known truths depending on your answer to the following question:
"Did you know that high achievers from disparate fields, from scientists to CEOs to Olympic athletes, all share certain traits that cement them as high achievers?"
If you answered no, then this book is useful in its entirety. It spends its first third convincing you why being a high performer might be worthwhile, the next third identifying these four common traits among high achievers, and the last third of the book giving strategies to help oneself actually develop these four traits. Furthermore, the author has a PhD and her research is centered on high performers. So the author lends the subject-matter of the book credence by virtue of it being based on research and not being merely anecdotal evidence.
If you answered yes, then I'd suggest reading the the table of contents of the book just to see if you already knew what they were going to talk about. If there's a particular topic you're more interested in, then read that. Otherwise, if you already knew about the link between high achievers, chances are you are interested in being a high performer yourself and so have pursued various sources of info to figure out how. I'll just mention the four traits Gotian says are common among high achievers: (i) having intrinsic motivation (as opposed to extrinsic) to do the work, (ii) being able to persevere in the face of adversity (instead of asking *if* you can overcome a problem, you immediately ask *how* to overcome it), (iii) having a strong foundation in the field (both knowing the important things related to being the best in that field and having a good network of supporters and mentors), and (iv) being of the mindset that you always need to keep learning and growing.