Understandable, but I can’t really talk for someone else than my self. My example was about me being on time and therefore most do the same because it was something I felt was mutual. I would never tell them that they need to change for my sake, if I would then it would be for our relationships sake. How can I tell someone I wish them to be on time if I am not?

And ofc it is about interest, I want a harmonious relationship regardless what kind of relationship it is, to be respected then I need to respect the person back. It isn’t like I walk around and think about this haha

But you did make me curious and I am still curious, so far can I only assume what you refer to.

I think we are talking about different things. To me is It not meant to be used against someone but to better yourself and understand consequences of your own actions. It is mainly said to kids like you said. But it sounds like you hear it a lot in arguments which is not how I think it should be used.