I don't know what "differentiation" means and I noticed you've mentioned Schnarch before - is there a particular work I can look at? This stuff really resonates with me -
He has a couple of articles on Popular Psychology's website.
He has written quite a few books - Passionate Marriage is the only one I've read cover to cover. I'm working through Constructing the Sexual Crucible, but it is much more dense and academic - I suspect it is targeted more towards other therapists than lay readers.
M: 32 W: 29 T: 9 Years M: 4 Years I hit rock bottom: 2/11 PA admitted: 4/11 WAW: 5/11 D filed: 6/11 now: Patience, wisdom, and growth - hopefully.