What was your heart's intent when beginning this book? Your title should come from there & I agree, keep it simple. Your subtitle, should you go that route, speaks to your subject or if you will, the book's content.
We can't have too many books on this subject, in my view, for certain books speak to different people at the various stages we all encounter in our recovery/reconstruction process.
Just as certain books that I have read were godsends to me at the time that I found them so too will your book be a blessing to a great many. More power to you, Ken.
Your fellow journeyman,