Constantly while I was in school (teachers saying "you're making this harder than it has to be"), also in regular life. Never made any sense to me being told that I think too much. Like, what am I gonna' do, think less ? That's like saying breathe less !
Thinking is what my brain does, I can't think it into not thinking-how crazy a suggestion is that ? It's like saying don't listen, don't see, don't smell etc.-except I can't "close" my brain in way I can cover my eyes or ears, my brain doesn't need external input to do what it does (generate thoughts). It's not like the people have some clever idea of how I might think less, some substitute function.
I over-feel (emotionally) as well as over-think, but that isn't a familiar phrase ("you overfeel things"), so people just repeat the line about overthinking.
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*"I don't know what it is, but I know what it isn't."*