In "The Language of Letting Go" by Melody Beattie there is a beautiful reading about separating from Family Issues. If you're not familiar with this book, it's a daily reader. The January 4th reading discusses this. If you can get this book, read this day's entry. She always does a "Today, I will..." at the end of the reading so I'll quote that here:
"Today, I will separate myself from family members. I am a separate human being, even though I belong to a unit called a family. I have a right to my own issues and growth; my family members have a right to their issues and a right to choose where and when they will deal with these issues. I can learn to detach in love from my family members and their issues. I am willing to work through all necessary feelings in order to accomplish this."