How Do You Keep Your Ideas From Become Part of Your Identity?

I think a lot of it is for so many people, they get trapped in either a preacher or a prosecutor mindset. And at some point their ideas become part of their identity. So that for people to give up on an idea, many cases lead to a sort of panic. If I don't have that idea, then what do I have? Who am I? You know even scientists struggle with this, right? But you don't seem to.