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Build a Bona Fide Book & Brand

Not all Ghostwriters are created equal.

If you are looking to shape a memoir with a clear message or a personal growth book fused with personality, and you care about hiring an ally who will help you create the world-class message that will have an undeniable impact on your audience, look no further.


And get you published through either a trusted independent publishing partner  or Simon & Schuster’s retail distribution channels.

Get Started

Consultant/Coach to


CEOs, Authors & Coaches

Ghostwriter to


Full-Length Books

Creator Of


Short Ebooks



Brands & Programs

Meet Joscelyn

CEO, Joscelyn Duffy International Inc./
The Maven Agency

For nearly 25 years, I’ve worked as a professional writer, marketer and communication strategist—one who cares about shaping innovative products that take businesses to the next-level. Working alongside global entrepreneurs; NY Times best-selling authors; and world-renowned thought leaders, coaches, authors and speakers, I bring game-changing visions to life through the creation of the world-class books and brands that resonate deeply with audiences.

Partnering with me as your ghostwriter means you gain a co-developer and creative visionary who will provide insightful big-picture business strategy, build out innovative proprietary principles & methodologies, create powerful narratives that forge your unique voice, and take your ideas to places you didn’t realize they could go!

  • Sought-Out Ghostwriter, Copywriter & Message Co-Creator to Celebrities, Established Authors and Emerging Thought Leaders

  • Specializing in Non-Fiction, Memoirs with a Clear Message, Innovative Personal Growth, Psychology, Leadership, Business, Personal Finance, Wellness


Thank you for being such a wise and thoughtful shepherdess! I couldn’t have done any of this without you. More than your excellent musing and writing skills, you have provided so much intuitive guidance about the bigger picture, far beyond my book.
I’m finally getting to the stage where I’m starting to see and feel my true purpose. I’m grateful you have not only “seen” me, but have also been such a thoughtful coach for me on this leg of my journey.

Martha BrownFormer CEO, Tipperary Sales (dba Lay-Z-Boy Home Furniture Galleries) and Founder, It’s On You Executive Coaching

...She is not a ghost writer, she is a voice finder. After only a month of working with her, I have tapped into my authentic voice in a way that I have never experienced. As a result, we are co-creating amazing content…but I am also getting more clarity on what I uniquely have to say and offer to my clients and how to live out my true purpose in a more authentic way.

Betsy JordynPresident, Accelera Consulting Group

Joscelyn is a master of her craft and an absolute joy to work with. She brings out not only the best in peoples’ ideas and writing but, more importantly, the best in people. As an author and former publishing company owner, I have worked with a number of people in the industry and can say, beyond a shadow of a doubt, Joscelyn is the best person I have ever worked with. Helpful, insightful and inspiring, she has a knack for being able to capture all those thoughts in my head and make them clear and concise. Give her your ideas and she’ll transform them into something your audience not only can understand, but also enjoy and be impacted by.

Corey Sigvaldason, Ph.D.President, Grandesco College & Founder, HOP Leadership Program

Having obtained a Ph.D. from a highly ranked UK University, I have studied and worked with many who are regarded as intelligent. However, in working with Joscelyn Duffy, I was regularly offered a timely level of insight, inspiration and wisdom that is unmatched. Her ability to understand and reframe concepts and ideas, combined with her knack for just listening were noteworthy traits. In the end, I not only got a world-class website, brand and book in my time working with Joscelyn, I also got the connections and the confidence required to move it all forward. The decision to work with Joscelyn was one of the best business decisions I have ever made.

Dr. Rob GrahamFounder,

Guided by her intuition, Joscelyn has a beautiful way of tuning into the heart’s desires of those she writes for, and transforming those often unspoken sentiments into words. For many, a book is a crucial element to fulfilling soul purpose and sharing soul lessons, and Joscelyn honors this process. I willingly refer my clients and close friends to her, knowing she can assist in writing their stories just as they envision.

Sonia ChoquetteWorld-Renowned Intuitive and Spiritual Teacher (Hay House)

What I love most about Joscelyn is her passion for excellence coupled with the fact that she is gifted in helping to bring out someone's voice. She truly is an alchemist when it comes to bringing words to life. She helped me bring a high-quality book to life in three months, which is unheard of in the book writing world. Her contribution to the vision of my book was unprecedented. Joscelyn is a class act and if you have a desire to write a book you should absolutely work with her to help you bring your vision to life.

Shannon GrahamSuccess Mentor, Organizational Coach & Consultant

The book is fantastic – totally professional. Wouldn't change a thing. The authors come across as empathetic and 100% authoritative and trustworthy. An awesome job by you!

Michael LevinNew York Times Best-Selling Author, the "Godfather of Ghostwriting" & CEO, Michael Levin Writing Company, Ghostwriter of over 700 books (on review of a book ghostwritten for a client)

I highly recommend Joscelyn to anyone who is serious about creating and writing content they want to be proud of. She will be your ghostwriter, writing coach, creative collaborator or whichever support you need for your next writing project.

Linda EdgecombeAward-winning Celebrity Humorist Speaker, Author, and member of the Top 60 Motivational Speakers in The World

Clients have been featured in and on…

Book Coaching & Consulting

Shaping a world-class thought leadership book takes time and talent. Create the best by hiring the best. This program is for the adept writer seeking a co-visionary to help hone and ignite their message and brand.

US $10,000-$55,000

Book Co-Creation

You’re an adept writer, but you want an ally to help hone, expand and refine your message. In Book Co-Creation, we co-develop everything from the big-picture vision to marketable principles as we write your book together.

Starts at US $45,000

Full Ghostwriting

If you care about hiring a veteran ghostwriter to bring your game-changing vision to life, start here. Shape your world-class book today and get published through Simon & Schuster’s channels (or an independent publisher).

US $85,000 and up

Let’s co-create a book that will be talked about for years to come!

The time is NOW! The world is waiting.

Let’s start with a conversation and see just how far you and your innovative ideas or riveting story can go. Then, let’s bring your vision to life in a way that is even bigger than you imagined it could be.

Book a free discovery call