For you, or for someone you love?
This book is addressed throughout to the person with BPD. That single fact determines almost everything about whether it is the right purchase for you, and it is rarely stated clearly enough on a book's own site.
Four readers, four answers
Find yourself here before deciding.
You have BPD, or think you might
Written for you. Start with whatever is loudest rather than at chapter one, and keep a notebook — half the chapters end in a prompt.
You support someone and want to understand
Chapters 1 to 7 explain the mechanism and are the reason most partners and parents say it was worth it. The skills chapters assume you are the one dysregulating and will read oddly.
You want to know how to handle their behaviour
There is nothing here addressed to you about what to do when they are escalating. The reader-route pages on this site for partners, parents, friends and carers cover that, and a book written for families would serve you better.
You are deciding whether to stay
No book should make that call and this one does not try. That needs a therapist of your own, and the carer page on this site is a better starting point than any chapter here.
What is actually available to you
Supporters routinely take on things that are not theirs and skip the things that are. Tick what you already do.
Consistency does more than any single conversation. Predictable behaviour from you removes ambiguity, and ambiguity is what the fear runs on — which is why steadiness outperforms reassurance by a wide margin.
The questions from this side
Including whether to give them the book.
Should I give it to them?
Only if they have asked for help in their own words. Unprompted, a book about someone's mental health frequently lands as a comment rather than a kindness. There is a page on this site that works through that decision honestly.
Will reading it help me understand them?
The first seven chapters, substantially. Most supporters describe that as the point where behaviour they had read as deliberate stopped looking deliberate, and that changes how you speak to someone.
Can I use the skills on them?
No, and that framing is worth dropping. The skills are for the person using them. What you can do is change your own responses — validation, consistency, limits you actually hold — which is a smaller list and a more effective one.
What if they refuse help?
Then what is available is your side: what you will do, how much you can sustain, and where your own support comes from. That is less than you want and it is not nothing.
Is there anything written for me?
This site has routes for partners, parents, friends, carers and adult children. For a full book, something written for families of people with personality disorders will serve you better than this one.
Where do I start on this site?
The page matching your relationship to them. Each one is written from your side rather than theirs.