How to Write a Character Arc That Actually Works

What’s the number one rule you’ve heard about character arc? Probably “Make sure your character is different in the end from how they appear at the beginning,” right?

(If you’ve heard a different one, let me know in the comments!)

Many writers never even get that far—their plot takes center stage, with the character’s development barely surfacing. But if you’re reading this, you have thought about character arc, and you want to make sure you’re doing it right. It could be you’ve gotten feedback that your protagonist feels a little flat, or that something about their development isn’t satisfying.

In this post I’m going to give you the secret to creating a strong, relatable, impactful character arc for your story. Warning: This will completely change how you think about characters and how you develop your protagonist and story. Big things are about to happen!

The Story Pillars: A Refresher

If I were to ask you the three pillars of story, what would you say?

Hopefully, these:

PLOT

CHARACTER

THEME

If you’re missing one of these pillars, your story can easily crumble. But in truth, it’s not enough for you to simply have all the pillars. They must be woven together to create a story that engages your reader and stays with them long after they’ve closed the book.

An author typically isn’t thinking about all these pillars as they’re creating a story. There’s usually a focus on one, maybe two, at the beginning. And that’s okay, especially for pantsers, who write as they go without a plan or outline. But at some point, you’ll want to go back and see if all these pillars are working together properly. For many, this is done after finishing the first draft.

Here’s a common mistake that can happen in that first draft:

A writer has the entire plot worked out. They also tried to establish, for example, that their protagonist is socially anxious in the beginning, and by the end they’re more comfortable in social situations. Hooray for development!

But something feels…off. The arc doesn’t feel meaningful, or the change seems author-imposed rather than organic. (Meaning, the readers recognize the author’s hand in all this. It no longer feels like a real human going through real change, so the suspension of disbelief is broken.)

These are the two vital pieces the writer likely missed:

A)     The character’s arc MUST be connected to the story’s theme.

B)     The character MUST learn the theme in order to solve the main plot problem.

Let’s break down each piece.

Theme: The Secret to a Solid Character Arc

If you’ve ever read Save the Cat! Writes a Novel by Jessica Brody, you will know the three ingredients for a protagonist. They must have:

1. a flaw (an inner wound)

2. a want (their goal, which is expressed in the plot)

3. a need.

The need is a lesson they must learn in order to fix their flaw and become the more completed version of themselves. The need, my friends, is always tied to the theme of the story. No exceptions.

This is the point when authors usually ask, “Well, what’s my theme?”

And that is exactly the question I want you to be asking. What’s your theme? What is the main thing you’re talking about in this story? What message do you want to give through your character’s journey? Here’s the hard news: If you don’t have a theme, then you don’t have a complete character arc, which means you also don’t have a complete plot.

Don’t let that send you into a pit of despair. Because this is actually super cool! Those three pillars of a story are intrinsically connected, and if you solidify each one and how they connect with each other, then BAM, you have an incredible story, far stronger than the majority of books published out there!

Theme and Character: An Example

To better understand this, let’s try out an example:

Say your protagonist is a single mom who’s been super focused on giving everything to her child for the past eighteen years. Now her child’s off to college, and Mom can finally give to herself—but she doesn’t know how. The book will explore her challenges in learning to give to herself, and who will help (or hinder) her along the way.

Ooh, I kinda want to read that. Okay, so we have our protagonist.

What is her flaw? It could be lack of self; she’s unable to see that she should come first—that before she keeps giving to others, she needs to give to herself.

What’s her want? This is a goal that could be achieved by the end of the story or discarded when the protagonist realizes it’s not important (because they got what they need). Let’s say she wants a partner because she’s lonely.

What’s her need? Ah, here’s where things get interesting. Because the beautiful thing about the need (the lesson she must learn) is that in order to get what she wants, she must get what she needs. Here, I would say she needs to learn to form a sense of self. Who is she without a child taking up her 24-7? She needs to find herself. And truly, in the most profound sense, that is the only way she can truly get what she wants: a partner who sees her for who she is.

See what just happened there? That’s a full arc. But it’s full because it’s heavy with theme.

The theme: Self-identity, or self-worth (this can be tweaked depending on the author’s perspective and which direction to take this in)

The message: To have strong relationships, you must first have a strong relationship with yourself.

Character Arc Unlocks Plot

This is the second piece that many writers miss. They’ll create a plot and have their character change in a fundamental way. Maybe they become more confident or learn to trust others again. But unless that change allows the protagonist to solve the main plot problem, the three pillars will remain disconnected.

Let’s say the protagonist learns to trust people by the end of the story. If they hadn’t done that, would they still be able to defeat the villain? Solve the mystery? Save the house?

If the answer is yes, then the character arc is sitting beside the plot rather than supporting it. The strongest stories don’t allow that separation. The protagonist should succeed because they changed. Learning the lesson is what makes the plot resolution possible.

To recap: The theme is the lesson the character must learn. The character arc is the process of learning it. And the plot is the container in which all this takes shape in a physical, shown way.

The Character Arc Test

If you’re not sure whether your character arc and theme are working together, ask yourself these five questions:

1. What belief is your protagonist carrying at the beginning of the story? This can be a belief about themselves or the world, but it should be integral to who they currently are. (Examples could be “People always let you down” or “My value comes from taking care of everyone else.”)

2. What belief does your protagonist hold at the end instead? (E.g., “Some risks are worth taking” or “I matter too.”)

3. Which relationship in the story teaches the protagonist what they need to know? This will be the B-story (subplot) character who will most help the protagonist learn the lesson. (Bonus: The B-story character should either be the opposite of the theme or represent it.)

4. Could your protagonist achieve their goal (the external plot) without changing? (If yes, you have a problem).

5. Which scenes are vital to showing my character’s transformation? Which plot points provide obstacles and which introduce moments that help my character?

If you can answer those questions, then you have a solid character arc and theme that support your plot. If you’re having trouble answering those questions, book a brainstorm with me. ;)

To Wrap It Up

If you have trouble plotting character-driven stories, doing the work I just described will make it 10x easier. (Also, read my post on writing a character-driven story.)  But this work is also crucial for plot-driven stories, which tend to leave out this missing link: What must my protagonist learn to win the day?

The good news is that you don’t need to have all of this figured out before you start writing. Many authors discover their theme and character arc through the drafting process. The important thing is to ask these questions, at the latest, when you’re ready to revise your first draft.

Remember: A character arc isn’t just about making your protagonist different by the end of the story. It’s about guiding them toward a truth they couldn’t see at the beginning. The theme is that truth. The character arc is the process of discovering it. And the plot is what forces them to learn it. That’s what creates the kind of story that stays with people long after they’ve turned the final page.

About Adina

Adina Edelman is a book editor who works with authors of memoir and fiction, especially historical, mystery, sci-fi/fantasy, literary, and middle-grade fiction. She’s all about mining your message, unearthing the gold in your story—not just the grammar errors.

Adina has worked on over 140 titles in the past five years (and published one of her own). She offers 30-minute coaching sessions alongside her editing services.

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