How to Build a Long-Term Career as an Author: 13 Essential Principles for Aspiring Writers
- AJ McMullen

- Aug 5, 2025
- 5 min read
Are you an aspiring author dreaming of turning your passion for writing into a sustainable career? Whether you’re penning sci-fi novels, fantasy books, or any genre, achieving long-term success as an author requires more than just writing a book. With 15 years of experience and thousands of books sold, A.J. McMullen, a seasoned sci-fi and fantasy author, shares 13 non-negotiable principles to help you navigate the competitive world of self-publishing and build a thriving author career. In this blog post, we’ll break down these actionable strategies to help you stand out in a saturated market and create a lasting impact as a successful author.
Why Long-Term Success Matters for Aspiring Authors
The publishing industry is more competitive than ever, with thousands of new books released annually. For instance, the sci-fi genre alone sees countless titles vying for readers’ attention. Many new authors mistakenly believe that writing a book is enough to guarantee book sales and fame. However, as A.J. McMullen explains, self-publishing success demands a strategic approach, akin to running a Fortune 500 publishing company. From writing consistently to mastering book marketing, every step you take shapes your author platform and career trajectory.
In this guide, we’ll explore the roles and responsibilities of a self-published author and share A.J.’s 13 principles to help you achieve long-term success as a writer. Ready to transform your writing career? Let’s dive in!
Understanding Your Role as a Self-Published Author
As an indie author, you’re not just a writer; you’re the CEO of your own publishing business. This means taking on multiple roles typically handled by a traditional publishing house. Here’s a breakdown of the key departments you’ll manage:
Executive Level: As the CEO, you’re responsible for the vision and success of your author business.
Creative Department: You’re the writer, developmental editor, and copy editor, crafting and refining your manuscript.
Publishing Department: You act as the publishing manager, book designer, production manager, and distribution manager to bring your book to market.
Marketing and Sales Department: You’re the marketing director, PR manager, social media manager, and website manager, ensuring your book reaches the right audience.
Finance and Administration: You handle budgeting, legal considerations, and administrative tasks as the finance manager and legal counsel.
Future Development Department: For ambitious authors, this includes roles like film and television producer or merchandise development manager to expand your brand.
While this list may seem daunting, you don’t need to master every role immediately. Start small, learn as you go, and consider outsourcing tasks as your writing career grows. For a detailed guide on implementing these roles, visit https://ajmcmullen.com for AJ’s full blog post on self-publishing strategies.
13 Principles for Long-Term Success as an Author
Here are AJ McMullen’s 13 essential principles to help you build a successful writing career and thrive in the self-publishing industry.
1. Develop a Consistent Writing Habit
Discipline is the foundation of a successful author. Treat writing like a job, setting aside dedicated time to create high-quality content. Without a finished book, none of the other steps matter. Establish a writing routine to stay accountable and avoid procrastination.
2. Invest in Your Improvement
Continuous growth is key to writing success. Overcome the Dunning-Kruger effect by actively seeking feedback and addressing weaknesses. Take writing courses, read writing books, or use tools like Grammarly to refine your craft. AJ recommends studying creators like Michael LaRon, Shaelin Writes, Jenna Moreci, and Abbie Emmons for inspiration.:
3. Build a Strong Author Platform
Your author platform is your online presence, your website, social media, and more. Start early with platforms like TikTok, YouTube, or a personal website (e.g., AJMcMullen.com). Use tools like Linktree to centralize your links until you’re generating book royalties.
4. Learn the Business of Publishing
Understanding the publishing industry is critical. Familiarize yourself with roles like book designer and distribution manager to streamline your self-publishing process. Refer to AJ’s blog for an in-depth look at these responsibilities.
5. Don’t Rely Solely on Book Sales
Diversify your income to sustain your author career. Create merchandise, offer freelance editing, start a YouTube channel, or secure speaking engagements. These streams can support your writing business while you grow your audience.
6. Network with Industry Professionals
Networking is vital for author success. Attend writing conventions, comic cons, or writer meetups to connect with peers and industry experts. These relationships can provide insights, collaborations, and opportunities to grow your publishing career.
7. Prioritize Reader Engagement Over Profit
Building a loyal fanbase is more valuable than chasing short-term profits. Engage readers through personal outreach, like phone calls or emails, to create meaningful connections. A gripping story paired with authentic engagement fosters long-term book sales.
8. Plan for Long-Term Projects
Think beyond a single book. Plan a book series or a backlist to generate passive income over time. AJ is working on a 10-book series with a 5-book companion series, ensuring sustained reader interest.
9. Master Marketing and Promotion
Effective book marketing requires visibility. Craft compelling book blurbs and ad copy, and leverage social media trends to reach your audience. On average, a reader needs to see your book seven times before purchasing, so maximize your advertising efforts.
10. Embrace Resilience and Adaptability
Failure is part of the author journey. Whether it’s negative reviews or unsold books at conventions, learn from setbacks and adapt. As AJ says, “Fail early, fail often, fail fast,” and use each failure as a stepping stone to writing success.
11. Manage Finances Wisely
Budget carefully for expenses like editing and cover design. Track costs for conventions and marketing to avoid financial pitfalls. AJ’s experience as a graphic designer helps him save on certain tasks, but meticulous planning is key for all authors.
12. Stay Authentic to Your Voice
Your unique voice sets you apart in a crowded market. Authenticity attracts readers who resonate with your perspective, building a dedicated audience for your books.
13. Set Realistic Goals and Milestones
Break your author career into achievable steps, instead of aiming to be a bestseller overnight, set goals like finishing a manuscript or selling 1,000 copies. Small, consistent progress leads to long-term success.
Take Action: Start Your Author Journey Today
Building a long-term career as an author requires discipline, strategy, and resilience. By embracing these 13 principles, you’ll transform from an aspiring writer to a successful self-published author. Ready to take the next step? Visit AJMcMullen.com for more writing tips and resources, and subscribe to AJ’s YouTube channel for free, no-BS advice drawn from 15 years of experience.
Don’t let imposter syndrome or a saturated market hold you back. Start writing, engage your readers, and build your author platform today. What’s your next step toward publishing success? Please share your thoughts in the comments below, and let’s grow together as authors!
Support AJ’s Mission: Subscribe to his YouTube channel, give this post a thumbs-up, and follow him on TikTok and AJMcMullen.com for more self-publishing tips and inspiration.
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