M. Scott Peck, author of the popular "The Road Less Traveled" wrote in "People of the Lie" Genuine love is always ultimately sacrificial." He did not explain what "sacrificial" means to him. I guess if you are in a marriage for 40 years, and you give of yourself without giving up your SELF, then that's a good thing. Whenever I wonder about my marriage, I remind myself that I am accepted for who I am, as I am, in whatever moment in time. I think that is something we all long for: to be accepted for who we are.