As I traverse the world I often observe couples who have dysfunctional relationships. Most relationships have a certain level of dysfunction and can be improved. I also observe many parent child relationships that need "polishing" [to be generous...].
So some people would say "mind your own business", but as Jews we know that we are all responsible to care for and help each other. However, most people would not [in my humble opinion] be receptive to hearing what might be wrong and what steps they may take to change the situation so I almost always leaves my thoughts up in my brain and prevent the passage of the thought from entering the verbal sphere.
It's sad for me though. Things could be SOOOO good but all too often they are not.