No More Mr. Nice Guy! http://amzn.to/HEvE9r
great book helped me out a ton...here's a summary
Dr. Robert Glover has dubbed the "Nice Guy Syndrome" trying too hard to please others while neglecting one's own needs, thus causing unhappiness and resentfulness. It's no wonder that unfulfilled Nice Guys lash out in frustration at their loved ones, claims Dr. Glover. He explains how they can stop seeking approval and start getting what they want in life, by presenting the information and tools to help them ensure their needs are met, to express their emotions, to have a satisfying sex life, to embrace their masculinity and form meaningful relationships with other men, and to live up to their creative potential.