I recommend this book to anyone who experienced any sort of emotional neglect and/or abuse from parents or partners.  And anyone who is unsure if it's what they experienced.  It's written in a very frank and informative style.  
The first few chapters initially turned me off as I was feeling they were a bit doom and gloom... like emotionally immature people are "bad" but once through that, it all comes together in a way that approaches them with more compassion, yet not dampening the effects or excusing the behavior.  
I'll be recommending this to family and clients for a long time and will probably check out her follow up books as well.