Deborah Sosin

Deborah Sosin - Editor

Boston, MA, USA

30+ years' experience in nonfiction, memoir, self-help, kid lit. Known for speed, accuracy, versatility, and compassion. MSW & MFA.

Request a quote
Verified identity


I have over 30 years' experience as an editor working with individuals and organizations both freelance and in-house, including Houghton Mifflin, Harcourt Brace, Gorsuch Scarisbrick, Candlewick Press, Charlesbridge Publishing, and Little, Brown. I am also an author, essayist, GrubStreet (Boston) instructor, and part-time psychotherapist. Former publications director at Hebrew College and managing editor of the Lahey Health Journal of Medical Ethics, I have consulted on numerous corporate or institutional publications and manuals. My clients have praised me over the years for being warm and approachable as well as exceptionally detail-oriented and perceptive about the big picture.

I’ve helped novice and veteran nonfiction writers improve their work and get published through careful attention to macro issues such as structure, flow, audience, voice, and purpose; as well as micro issues such as grammar, punctuation, and redundancy. I view my role as a collaborator, coach, and cheerleader. My broad-ranging specialties include creative nonfiction, narrative nonfiction, memoir, career books, and psychology titles. As an award-winning picture-book author, I consult with prospective or active children’s-lit writers who want help with project concepts, manuscript editing, and/or industry information. In addition, I offer personal coaching to help writers understand and work through writer’s block and other inner obstacles to creativity.

My own publishing credentials include a mindfulness-themed picture book, Charlotte and the Quiet Place (Parallax Press, 2015), illustrated by Sara Woolley, which won the Gold INDIEFAB Medal and the Silver IPPY Award, among several honors. In 2017, Between Sessions Resources published my clinical workbook, Breaking Free of Addiction. My essays have appeared in Salon, Cognoscenti, Boston Globe Magazine, Journal News, The Writer's Chronicle, Writer's Digest, The Manifest-Station, Zone 3, and elsewhere. A scholarly paper on adolescent diary writing appeared in Adolescent Psychiatry.
English (US)
Biographies & Memoirs
Career Guides
Children’s Non-Fiction
Self-Help & Self-Improvement
Picture Books

Work experience

Freelance Editorial Consultant

January, 1990 – Present (over 31 years)

See overview above for the range of genres I specialize in as well as a summary of my relevant employment history. In the 1990s, I was a production editor in the School Reading Department at Houghton Mifflin; manager of the Copyediting and Proofreading Department at Publicom, Inc.; and freelance proofreader in the trade division of Houghton Mifflin.

Portfolio (23 selected works)

The Magical Mindful Day

Deborah Salazar Shapiro, Addison Stonestreet

Ten Beautiful Things

Griffin, Molly, LeChuga, Maribel

Fantastic Fruits: A Grimal Grove Coloring Book

Masiello, Ralph, Masiello, Ralph

Dog and Rabbit

Saltzberg, Barney, Saltzberg, Barney

Hope's Crossing

Goodman, Joan Elizabeth

Lives of the Presidents


Understanding Family Communication (2nd Edition)

Yerby, Janet, Buerkel-Rothfuss, Nancy

The Reader's Companion to U.S. Women's History

Navarro, Marysa, Mink, Gwendolyn, Steinem, Gloria, editor, Mink Professor, Gwendolyn, Navarro Professor of History, Marysa, Mankiller, Wilma, Smith, Barbara, Steinem Editor, Gloria, Mankiller, Wilma, Smith, Barbara

Magnolias Don't Bloom in September

Luck, Carol Lynn, Ohop, Aemilia

The PTSD Workbook

Tijana Mandic, Ph.D.

Deborah has 7 reviews

Communication & Punctuality
Communication & Punctuality

C Rechelle LeDe
I enjoyed working with Deborah. She was kind, yet straight-forward in her review. This was very helpful for me as a novice writer. I was beyond pleased with my experience!

C Rechelle LeDe, January 2021

Deborah Sosin
So glad I was able to help you move forward with this project. Best of luck!

Reply from Deborah Sosin

Michelle Kennedy
Deborah was incredible to work with! Her edits and notes were incredibly helpful in elevating the text in clarity and flow. She is very punctual and communication was great as well. This is the professional editor I needed to get this project to publication level. I will definitely be using her for future projects.

Michelle Kennedy, January 2021

Deborah Sosin
Thank you for this lovely review! I really enjoyed working with you--you were prompt and direct in your communications with me. Your book is filled with wisdom and I wish you all best of luck with ...
Read more

Reply from Deborah Sosin

Debbie did an absolutely stellar job at providing an editorial assessment for me. Her work was intelligent, insightful and comprehensive; and her experience and impressive knowledge of the target market and its readers truly shone through. Working with Debbie was an absolute pleasure, too. She was kind, professional and thoughtful - and delivered her work in a timely manner.

PJ P, December 2020

Deborah Sosin
Thanks so much for the kind words! I look forward to our continued collaboration on this important project.

Reply from Deborah Sosin

Nicole Arzt
I am so grateful to have found Deborah! She was extremely thorough in reviewing my manuscript. Her editing was precise with clear attention to detail. She was easy to communicate with during this process. I will use her again for future projects.

Nicole Arzt, October 2020

Deborah Sosin
Thank you for this lovely review, Nicole. I really enjoyed working on your book and am grateful for your clear, timely communication as well. Good luck with all next steps and I hope to see it on t...
Read more

Reply from Deborah Sosin

Cliff Beach
The sample edit really helped me decide to let Debbie finish the copy edit. Her process is very thorough , she goes above and beyond and takes time with the project to be encouraging , which is much needed for a new author. I look forward to the final edit to come soon.

Cliff Beach, September 2020

Deborah Sosin
Thank you so much, Cliff! It was a real pleasure to work on your book. I hope you find a wide audience for your story, your music, and your inspiring ideas!

Reply from Deborah Sosin

Read more reviews

Explore the Reedsy Community

Reedsy is a community of top publishing professionals. Join Reedsy today to browse 1000+ profiles.

Claire Winters

I've served as a developmental editor on over 30 non-fiction titles, specializing in psychology, personal development and media subjects.

Los Angeles, CA, USA

Gail Fay

Copy editor with 13 years' experience helping authors produce clear, polished nonfiction books: biography/memoir, self-help, how-to, sports

Los Angeles, United States

To view 1,000+ more profiles, Join Reedsy