I found this book disappointing, outdated, and needlessly reductive. I suppose it's okay for people who know nothing about transsexualism, but since I am trans and know quite a bit about transsexualism, I was at times disgusted, exasperated, and even offended.
As I recall, it was focused almost exclusively on MTFs, too. And the heteronormative model. And it said some irritating and misleading things about depression and the path people tend to take in...gosh, I can't remember now, it was either the path people take to realize that they are trans or the path they take to decide to transition. Anyway, I had a problem with that aspect.
As I recall, I had issues with pronouns in this book, but that's a frequent problem in books on this topic, so I might have just been confused about the authors' motives--or maybe the pronouns really were inconsistent. I don't know; I would have to reread it.
If you buy the paperback version, do not be fooled by the fairly recent print date (I think it was about five years old when I read it, so that puts the date around 2002-2004). This book was originally published in the mid-nineties, and the paperback version is still the first edition and not a revised edition. The book is working with an outdated version of the SoC, although I don't really know what the differences are between the old version and the latest version. Personally, I think the book should have been fully revised for paperback release.
Anyway, True Selves is about fifteen years old, and that's pretty old in this field. But you can draw your own conclusions.
P.S. I prefer Reid Vanderburgh's book. It's called Transition and Beyond. It was out of print when I bought it a couple of years ago.