Have you ever helped to guide someone, illuminate an idea, or inspire thought in another; and although your influence apparent, the someone behaves and speaks as if it was completely themselves?

This could be, for instance, a spiritual awakening or understanding; a change in a recipe; scientific theories; brainstorming solutions.
I don't feel slighted for not getting credit for my additional assistance.
I do, however, find myself having to be forgiving when someone decides to present or preach my very own ideas back at me later as if they were their own.
Makes me later feel kind of grateful that they were listening, and also a touch of happiness that I helped.