Making a mark without leaving a digital footprint. It's tough to do, but debut novelist Elizabeth Castellano is pulling it off.

Elizabeth, or Liz as she goes by, is the author of "Save What's Left."

In a field where a strong digital footprint is often a predictor of professional success, Liz is defying the odds.

Her book is one of the most buzzed-about titles this summer. People Magazine called it one of the best books of the summer.

You can credit a lot of things for Liz's success, but a strong social media presence isn't one of them.

Liz has a three-line bio on her website and doesn't do social media.

"I got off social media a couple of years after college. I just decided not for me. I don't like it. I think there's more harm than good. I just felt better being off of it, and so it just stuck, and you do miss things," says Liz.

• What pushed Liz off social media, and how that impacted her mental health and creativity.

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