Blake writes about the undeniable connection between your body awareness-- what she calls your somatic intelligence -- and your purpose, resilience, empathy and connection with and inspiration of others. Her mantra is best expressed (p. 119) as "practice it until it's embodied." In other words, if you want to increase your confidence, or charisma, then you need to first of all inspect your body -- feel how you feel -- when you are in your basic state, more or less confident. Then, finding a new body position to express greater confidence, or openness, or connection or whatever, you practice that new stance until it becomes second nature.
This is a useful concept. The book is full of stories that help illustrate what Blake means. Nonetheless, this is not a DIY somatic intelligence book. The principles are too high-level, and the stories too individual, to be helpful for the average reader to take on a specific self-improvement task, such as wanting to become more empathetic, and make it happen. The book lacks a usable taxonomy of somatic movement and the results that follow. So read it to get the idea, but go to a coach to make it work for you.