Marni Seneker
Coach. Editor. Ghostwriter.
Big Ideas. Beautifully Built.
Ghostwriting, proposal development, and editorial partnership for authors shaping ideas with both depth and market resonance.
I help coaches, leaders, and experts write books that make an impact, build their brand, and accelerate their business. From ghostwriting and proposal development to coaching and developmental editing, I provide high-touch support tailored to your current needs.
You want to write a book, but you don’t have to do it alone. As your thought partner, I draw out your best thinking by asking incisive questions, listening deeply, and collating your existing content. Together, we will translate your big ideas into a powerful, cohesive book that transforms your reader, builds your brand, and converts followers into fans. I would be honored to help you bring your book to life.
High-touch, one-on-one book coaching for prescriptive nonfiction
Customized to your project, your process, and your goals.
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Free 30-Minute Discovery Call
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Not sure what kind of support you need yet?
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A short, focused conversation to talk through your book idea, your goals, and where you’re feeling stuck, so you can see if working together is the right next step.
Best for: authors exploring coaching, longer-term support, or next steps.
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Quick-Start Book Plan
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Want clarity and direction right now?
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We’ll refine your argument, clarify your reader and their transformation, and pressure-test your book idea through written feedback and a one-on-one strategy session. ​A pre-pre-pre-proposal—bite-sized, focused, and designed to help you move forward with confidence.
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Best for: authors who want concrete guidance and a clear path forward.
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Ghostwriting​
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Looking for a collaborative writing partner?
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I work with prescriptive nonfiction authors to develop and ghostwrite book-length manuscripts, from concept through final revision. The process is high-touch and collaborative, including goal-setting, interviews for content, drafting, and revision.
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Best for: experts with a clear point of view who want a trusted partner to help bring their book to life.
Publications & Testimonials
Completed! I got so much from our time together. I’ll be giving you a shout out when the time comes. I tell everyone who says “oh I want to do that” to call you.
Vanessa Goolsby
The $100M Push, Broad Book Press, March 2026
