I'd never heard of the Internal Family Systems model before reading this book, but conceptually it makes sense to me. (I've often felt like I have different parts within myself that are either working together or at war with one another.) While the exercises here are described well, I couldn't get into them--I'd rather work with a professional--and some of the concepts Dr. Schwartz describes feel a little...ethereal? Still, it's an interesting topic and one I'd like to explore further.