I completely disagree. Never involve family, but do involve friends. Good friends will give you the courage for standing up for your boundaries and call you our when you are being unreasonable. They also always have unique advice to get unstuck from problems in a relationship. Having that additional support system for your relationship is a breath of fresh air, often more useful than relationship therapy itself, and the good news is that it's always there. My friends and I talk about our own difficulties in relationships during our weekly girls night. Seeing how other couples handle issues, and that everyone has their problems makes me appreciate my own relationship and gives me ideas for how to improve it.