I have a hard time with this advice. I grew up with it. You never talk about what happens in your home, with anyone outside your home. This advice benefits abusers. Without the perspective of someone outside, a person may not realize how toxic their relationship has become. I thought I had a difficult marriage, and after my ex had an affair, he agreed to counseling to try to save the marriage. A few weeks in, the therapist asked to meet with us individually. At my next appointment, she handed me information on legal aid, and instructions for filling a PFA in my state. It never occurred to me that what I endured wasn't normal. Maybe if I had been able to talk about it with others, I wouldn't have spent 17 years of my life in an abusive relationship.