I have been having to do this as well so I don't have another breakdown. I have learned a lot about setting boundaries during the past year. Though I know it is necessary for my sanity, I feel guilty about not doing more for people I set the boundaries with. It is easy to walk away from people who you have no (or less intense) emotional ties with but so hard to do when it involves people we really love. Love is so strange because the people I love most are the ones who can hurt me the most--even when they are very good people who care about me.