For me, Beside Ourselves is a guide to recognizing the importance of our "hidden personalities" and recognizing why we can act in ways that seem foreign even to ourselves when "in the grip" of our inferior functions, as Quenk puts it. This book shows that there is (obviously) value to accepting and understanding the "dark side" of our personalities, and that true equilibrium can usually be reached when we learn to deal with and even embrace the "eruptions" of our hidden inferior functions.
In my opinion, grasping the concepts found in this book will require that the reader has an understanding of personality type as defined by Jung, Keirsey, Myers-Briggs, etc. In order to understand the hidden personality, or inferior function, readers should have a strong understanding of the dominant function, which is essentially the personality we feel best describes us under "normal" circumstances. Highly recommended!
While not for the novice (some of the themes are contextually difficult to understand the first read through), this book offers startling insight into how MBTI and Jungian psychology play into our own (and others) personality makeup.
The focus is, of course, what happens to us when we are at our worst - when we are "beside ourselves". That is, when our least developed aspect of personality comes out full force - much like an 8 year olds temper tantrum.
While one would expect to see remarkable similarities between people "in the grip" of their least experienced emotional state, Naomi Quenk gives us both insightful, scientiic, and experincial data to show that personalities express their least developed parts in vastly dissimilar ways.
This is yet another book which I believe shoud be "required reading" for anyone looking to get a better view of personality, temperament, MBTI, and character. Of course I will always refer people to Keirsey's work for the basic principles, along with "Games personalities play" (authors name escapes me). All of these offer a very good view of how the interactions of personalities play out in everyday life.
Naomi Quenk's book is superb. In the appendix, she offers selected quotations by Jung (on which a preponderance of her work is based it seems). This book is well worth your money! I thouroughly enjoyed it.
-Regards