My Notes Bootcamp co-host Ellen Scherr is one of the most powerful examples of this I've ever seen.

She's a psychotherapist. A midlife truth-teller. And her Notes are so distinctly, unmistakably her that people screenshot them and send them to friends without even thinking about it.

"The woman you're becoming scares the people who need the old you.Good. She was exhausted anyway."

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Because it was true. Because she lived it. Because every woman who read it felt like Ellen reached through the screen and said:

I see you. I know that pain. Me too.

That's a writer thumbprint.