An intereting book, a little long winded in parts, but helped me significantly over the past several months:
Emotional Alchemy by Tara Bennett-Goleman

(removed link to website due to potential deletion by moderator)

M: 37
H: 36
Married: Aug 13, 2004
Decision to Divorce: July 20, 2008
Reconciled: September 2008
Current: Ambivalence