“Use your book as a way to establish credibility for your service or product, but make it commonly accepted that you are a business owner, first and foremost.”

Who said it, and where.

Who said “Use your book as a way to establish credibility for your service or product, but make it…”? Isaac Mashman wrote it in Personal Branding: A Manifesto on Fame and Influence, Second Edition (2025), Section 4.10, Shaping Your Image.