✨ Ever wonder what your heroine’s sun sign might be? Or what Enneagram your villain might be secretly hiding?
We’re going to look at Astrology and 16-Personalities for character development. This post is for every author who wants to deepen their character arcs without slogging through 300 pages of psychology textbooks.
🌀 Why It Works
Astrology, 16-Personalities (based on Jungian archetypes), and Enneagram offer ready-made patterns of motivation, fear, and growth.
By mapping these systems onto your characters, you create:
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Internal consistency
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Natural conflict
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Built-in transformation arcs
🛠️ Choose-Your-Tool Guide
Pick your favorite system:
🌞 Astrology
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Assign a sun/moon/rising combo to key characters
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Use their signs to shape emotional reactions, habits, and flaws
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EX: A Scorpio moon heroine won’t open up easily—but when she does? She’s loyal for life.
🧠 16-Personalities
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Use MBTI types to explore how characters think, feel, and make decisions
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EX: An INFJ antagonist may have the purest intentions… but still manipulate outcomes “for the greater good.”
🔥 Enneagram
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Great for discovering hidden fears and core motivations
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EX: A Type 3 character might chase fame to escape shame—but what happens when it’s no longer enough?
✍️ Writing Prompt
Choose one main character. Assign them a personality type using your favorite system. Now write:
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A journal entry from their POV
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A moment where their “type” causes friction with someone else
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A secret they’d NEVER tell… unless pushed
🐻 Bonus Bear Tip
This tool is especially powerful during early drafting or character revision stages.
It’s not about limiting your characters—it’s about revealing their depths.