Did you ever wish
you could write a story where all the characters are mute? Success! No troublesome dialogue to write. Except now your character's thoughts become the lingua franca between character and reader, and you're right back in the same dark alley.
Dialogue is the toughest racket in this business. Even the old pros get taken. The oldest mistake in the book? Letting characters spill everything they think and feel, subtext be damned. Real talk is full of interruptions, lies, evasions, things left unsaid in the dark. Spell it all out and the scene goes stiff as a corpse on a slab.
Then there's the dreaded info dump. Characters talking straight to the reader, handing over backstory gift-wrapped. It's a cheap trick and it always shows. The good stuff comes out sideways, in fragments, pulled loose by conflict—never handed over neat.
Beginners give every character the same voice. Same vocabulary, same rhythm, same trench coat. You should be able to pick a speaker out of a lineup blindfolded. Strong dialogue usually needs only "said." Let the action beats do the heavy lifting.
Too often, dialogue comes out too polished — full sentences, perfect grammar, no interruptions. Real speech is messy. It trails off, doubles back, talks past itself. That messiness is what makes it breathe.
And never forget, dialogue's got to earn its keep. It should reveal character, sharpen conflict, or shift the temperature in the room. Read it out loud. If a line can be cut without losing anything, cut it loose. Dead weight sinks you every time. Keep writing.
—Don