I learned this a few years ago. The phrase I still remember is "your idea is not your identity" (probably from this article[1]). This completely changed my mindset and the way I communicate.

Not sure where I've read this about originality, but the idea is "there is no such thing as original thought, only original perspective"

[1]: http://lanceschaubert.org/2017/02/22/my-idea-not-my-identity...