Top critical review
There are better books out there
Reviewed in the United States on March 20, 2019
(Me: mid-30s man, divorced once. I've spent the last 5 years working on my ability to connect in relationships, through reading, lots of dating, and some therapy. I'm now in the most joyful and satisfying relationship I could imagine, and I feel extremely confident in my ability to navigate all sorts of turbulent relationship waters.)
I believe in the basic premise of the book: attachment is super important, and many relationship conflicts do involve threats or damage to our sense of attachment. However, I don't think the "7 conversations" are the most useful framework I've seen for navigating these challenges. Instead, I'd highly highly highly recommend the book Nonviolent Communication. I think the 4 part communication framework described in that book is both clearer (and thus easier to implement) as well as more widely applicable (useful in your life outside of a romantic relationship).
I'd also add to my recommendation of Nonviolent Communication... if you're someone who thinks that "being strong" means being invincible, never being wrong, never depending on others... go read some Brene Brown as well (either The Gifts of Imperfection or The Power of Vulnerability). It will open you up to a whole world of joy, confidence, and true strength.