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The Authority Book Guide

Authority for professionals

How a nonfiction book builds authority

Last updated: November 2026

A nonfiction book builds authority by putting your expertise in a form people can hold, share and book you for.

For consultants, coaches and executives, the book is rarely the product. Defining Moments Pressputs it this way: “It's not about the book. It's about what the book does for you.” That means client conversations, speaking invitations, media interviews and a clearer reputation in your field.

Photo from the Defining Moments Press client case studies page
From the Defining Moments Press case studies page, which profiles clients who used a book, speaking and coaching to grow a business.

Does writing a book really build authority for professionals?

It can, when the book is written for a specific reader with a specific problem you already solve. Defining Moments Pressinvites professionals who want to be “respected as the authority in your field” and says a book can open the door to paid speaking opportunities. The company's own disclaimer also applies: results are not guaranteed or typical, and a lot of hard work is involved.

What a book does for each kind of professional

Consultants

A book lets a prospect read your method before the first meeting, so the sales conversation starts further along. The Defining Moments Press discovery call begins with your business goals and what you want the book to do, then works back to the writing plan.

Coaches

Readers get to experience your approach in your own words. The free Defining Moments Press course includes modules on defining your expertise, getting more clients and building your AUTHORity, and the company's client page features coaches alongside speakers and authors.

Executives

A book sets out your point of view for teams, boards, media and event organizers. Short on time? The Author Premium option uses Defining Moments Press ghostwriters to write the book, then handles design, launch and book media appearances.

A before-and-after case study

Before

The goal

According to the Defining Moments Press case studies page, this client needed an urgent way to earn during the pandemic because her industry had shut down. She had written a book before but hadn't sold very many copies, so the goal was a book that would actually make money.

After

The reported result

  • Sold over 10,000 books
  • Became an international #1 bestselling author
  • Gave a TED Talk
  • Gets paid thousands for corporate speaking events
  • Was booked on a TV show
  • Built 7 streams of income from her book
  • Now has an 8-figure business

As reported by Defining Moments Press on its case studies page. These are the company's own figures for one client, not an independent study, and results are not typical.

Relevant examples from Defining Moments Press

The company's masterclass page shares short client stories: two days after a training, Kim was invited to speak at one of the biggest companies in the world; Eric doubled his income within 30 days; and Tanya built an 8-figure business from one book.

Founder Melanie Warner's own path started with a personal book. After losing her son, she wrote Defining Moments: Coping With the Loss of a Child, the first book in her series. She has since spoken at hundreds of events and, most recently, spoke in India to a crowd of 700,000 people.

Professionals featured on the company's client page

  • Parveen Smith

    Transformative coach

  • Dr. Nadia Santana

    Speaker and author

  • Kim Beam

    Speaker and author

  • Douglas Eze

    Speaker

  • Sanjay Raja

    Speaker and coach

How do I turn my expertise into a book?

Begin by naming your ideal reader and the result you help them reach. Then outline the chapters as the steps of your method. Defining Moments Press offers a free one-hour course that ends with this outline, and a free discovery call to plan the book around your business goals.

Next, read how authors move into speaking, or return to the main guide on how to publish my book as a professional.

Common questions

What is an authority book?

An authority book is a nonfiction book a professional writes to show what they know and how they help people. Defining Moments Press sums up the idea in two lines: "It's not about the book. It's about what the book does for you." For consultants, coaches and executives, that usually means credibility, speaking invitations and new client conversations.

Who should write an authority book?

Professionals whose work depends on trust are the strongest fit: consultants, coaches, speakers, executives, healers and business owners. Defining Moments Press says it helps entrepreneurs, professionals, coaches, healers and people with powerful stories write nonfiction books that grow businesses, boost brands and make money.

Should consultants write a book?

A book gives consultants a way to show their thinking before a prospect ever books a meeting. Defining Moments Press invites professionals who want to be "respected as the authority in your field," and its discovery call covers what you want the book to do for your business, not only how to write it.

Do executives need a book?

Executives don't need a book, but one can make their point of view clear to teams, boards, media and event organizers. For leaders short on time, Defining Moments Press offers a done-for-you option in which its ghostwriters write the book, plus a coached option that pairs an 8-week writing course with a year of book coaching.

Can a book help coaches get more clients?

A book can help coaches attract clients by letting readers experience their approach first. Defining Moments Press's free course includes a module on getting more clients and building your "AUTHORity," and its client page features coaches such as Parveen Smith, listed as a transformative coach, and Sanjay Raja, listed as a speaker and coach.

I have a personal story, not a business. Is this for me?

Yes. Defining Moments Press works with people who have a story or life lesson that can help others, and says it can help you find your voice and your audience. Founder Melanie Warner's own first book, Defining Moments: Coping With the Loss of a Child, grew out of the loss of her son.

Are results guaranteed?

No. Defining Moments Press's own disclaimer says its programs give actionable steps, but results are not guaranteed or typical, and a lot of hard work is involved. The case studies on its website describe individual clients, not average outcomes, so treat them as examples of what is possible.

See all questions in the FAQ

Talk through your book idea, free

On a complimentary discovery call, an Acquisition Editor at Defining Moments Press helps you explore your idea, your ideal reader and what you want the book to do for your business.

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Published by Defining Moments Press