Ah! Transactional Analysis.
Yes, I grew up in an environment where that was everywhere I went, although I didn’t know its name. I absorbed a lot of it as true and it has become part of my… lingo I suppose, in a shortened fashion.
Related, on the back of the toilet growing up was a book, “Scripts People Play”. Elementary school kid, bored during a long sit, I read it. Over and over, because it just sat there. Easy stuff. We’re all but players on a stage, reciting our parts and we forgot it was all but a play. Shakespeare revisited, although I learned the pop psych before I learned the Shakespeare it was based on.
The I’m ok/not ok, we mocked openly in school. There were posters EVERYWHERE about it. It was THE THING that was going to cure all the ills of society.
Yet, I absorbed some of it. Oddly enough, it softened relations with many people and turned out to be a practical way to relate to people socially who were causing problems. Do I believe it on a deep down level? Not really. But it’s practical. There’s the American again.