Readers recognise a strong character voice before they can explain it. It is not an accent written phonetically or a catchphrase repeated until it annoys. Voice is the combination of what a character notices, how they judge it, the words they reach for, and the rhythm of their sentences. Two characters can describe the same room and sound completely different, because one counts the exits and the other counts the books. Finding that voice takes deliberate practice, because a writer's own habits will fill every gap unless they are deliberately replaced with the character's habits.

Give your character a walk through an ordinary place and write only what they notice, in the order they notice it. A nervous character notices locks, exits, and other people's hands. A lonely character notices pairs of people and empty chairs. A practical character notices what is broken and what it would cost to fix. This noticing list becomes a filter for every scene that follows. When you are stuck on how a character would describe something, return to this filter and ask what they would look at first, because that choice reveals more about them than any backstory paragraph.

Voice also lives in sentence shape. Some characters think in short, blunt sentences. Others spiral through long sentences full of qualifications and second thoughts. Write a page of your character's internal narration and count the average sentence length, then try the opposite rhythm and see which one feels true. Vocabulary works the same way: a character's job, age, reading habits, and region all shape the words they use naturally. Collect twenty words or phrases your character would say and twenty they would never say. That forbidden list is often more revealing than the allowed one.

A common mistake is to give a character a colourful way of speaking but ordinary thoughts and decisions. Real voice runs through everything: how they solve problems, what they avoid, what they lie about, and what they find funny. If two of your characters would make the same choice in a difficult scene, their voices are not yet distinct enough. Rewrite the scene so each character solves the problem differently, using their own logic, and let their dialogue follow from that choice rather than leading it. Readers believe a voice when it changes what happens.

The simplest test for character voice is to strip the names from a passage of dialogue and narration and see whether you can still tell who is speaking. If you cannot, the voice needs more work. Read the passage aloud, because rhythm problems hide on the page and announce themselves in speech. Then revise one element at a time: first the noticing filter, then sentence rhythm, then vocabulary. Changing everything at once usually produces a caricature, while changing one layer at a time produces a person who sounds like themselves in every scene.

Between drafts, write a short scene that will never appear in your story: your character doing an ordinary errand, such as buying groceries or waiting for a bus. With no plot pressure, you can focus entirely on how they notice, judge, and speak. These throwaway scenes often reveal voice faster than important scenes do, because the character has nothing to perform. Keep the best lines from these exercises, since a phrase discovered in a throwaway scene can unlock a voice in the main draft.

Finally, compare your characters side by side. Write the same event from two characters' points of view, using only their internal narration, and check that the two versions could not be swapped. If they could, return to the noticing filter and the sentence rhythm for each character and push them further apart. Distinct voices do not happen by accident. They happen when a writer makes deliberate, different choices for each character and then tests whether those choices hold.