Diane Callahan

Writer. Editor. YouTuber.

Who I Am

Editing Philosophy

As cheesy as it sounds, writing is a calling. We itch to express the stories we envision in our heads, to make our characters come to life. Chasing a new story idea is invigorating, but it can also be lonely, frustrating, and painful. That’s why we must seek out mentors and friends who will enthusiastically support our journey, through all the highs and lows. I would love to play that role in your writing life.


Previous clients have praised my ability to provide specific suggestions for improvement, especially regarding characterization and plot development. I also pay special attention to strengthening the writer’s prose, as I believe that a strong narrative voice is crucial to publishing success.


My pursuit of editing as a career began in college, when I decided to major in English and minor in English and English, as the joke goes. My BA from The Ohio State University is in Honors English and psychology, with minors in creative writing and professional writing, granting me over twenty-five courses in various forms of writing, in addition to a deeper understanding of human behavior.

Ever the overachiever, I chased after every writing and academic award my university offered, garnering the full-tuition Medalist Scholarship, the Columbia Gas Scholarship, the Harley Scholarship in English, and the Human Rights Award. I also received an Honorable Mention for critical analysis, an Honorable Mention for a piece of creative non-fiction, and second place in Literature for the campus literary magazine. I’m a member of Phi Beta Kappa, which celebrates excellence in the liberal arts and sciences.

Professional Experience

Currently, I’m the managing editor at Story Garden Publishing, a collaborative writing venture with fellow authors Jordan Riley Swan and Hero Bowen. Together, we plot, write, and edit novels in various genres, from comedies and romances to fantasy novels and fairy-tale retellings. Wish Hunter is the first project I’ve designed for Story Garden, an urban fantasy trilogy about stealing wishes that’s set in Savannah, Georgia.

I’ve been a full-time developmental editor for five years now, and I’ve devised detailed critiques for fantasy, sci-fi, literary, middle grade, thriller, and paranormal romance novels. Prior to Story Garden, I worked for three years as a developmental editor and plot outliner for a best-selling indie publisher under an NDA. I also wrote and edited interactive fiction games for Talented, an e-learning platform for teachers and business managers.

With an additional six years of editing experience as a writing consultant for the Ohio State Writing Center, a humanities writing tutor with Chegg, and a beta reader, I pride myself in my scrupulous attention to detail.​


Like most editors, I’m an avid reader of all genres, including literary classics, fantasy, sci-fi, horror, thrillers, YA, contemporary fiction, memoirs, and poetry. Above all, I adore working with writers who are eager to improve their craft. These specific genres and markets are my bread and butter:  

  • Adult fantasy, sci-fi, and horror

  • Young adult/middle grade (particularly fantasy and sci-fi)

  • Upmarket fiction (that delicious blend of literary and genre fiction)

  • Contemporary fiction

  • Thrillers and mysteries

  • Romance (especially LGBTQIA+)


Personal Life

As a writer myself, I spend much of my free time creating and submitting short stories and poems for publication, along with drafting fantasy novels. You can find all of my published works on my writing page.

I was born and raised in Central Ohio, but I often go on lengthy road trips with my amazing husband to hike through National Parks and explore art museums in big cities. I’m also an avid geocacher, a.k.a. a treasure-hunter in the woods. I’ve kept a bucket list since I was fourteen, and it contains over two hundred things I want to do before I die, including making every recipe from a single cookbook and seeing the cherry blossoms bloom in Japan. You’ll often find me posting about my baking and travel adventures on Twitter.

I aim to consume at least fifty books per year, many of which become fodder for analysis on my YouTube channel Quotidian Writer. If you’re reading this, you likely found me through one of my videos—and I thank you for your support and kindness as a viewer. On my Medium page, you can read more of my writing advice as well as many of my adapted video transcripts.

I post monthly updates about my writing, reading, and video-making on my Ko-fi blog.



I’m proud to work alongside Jordan Riley Swan and Hero Bowen as part of Story Garden Publishing. Below are some of our latest titles, and we have so many more to come! Click on the covers for a peek inside.

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I look forward to reading your work!