Any line of dialogue that you've ever heard anybody say before is already a cliché, so don't write it down.

When there are seemingly limitless ways to express a sentiment, why wouldn't you create an original sentence? If you're struggling to come up with fresh words, use a thesaurus—just be careful to not misuse an unfamiliar word.

Your goal isn't to copy somebody that you admire, your goal is to be the thing that other people would admire themselves.

Instead of borrowing from someone else's writing, make your own writing completely original. Make it your goal to write something so innovative that it becomes a new cliché.

There's almost nothing new under the sun. But there are different interpretations and different ways of thinking of things that are new." It's impossible to be one hundred percent unique all the time, so try putting a new twist on a familiar concept.

Use a familiar idea as inspiration, and approach it from a new point of view. A great way to create an effective plot twist is to start with a clichéd premise, then subvert the audience’s expectations by going in a different direction.

You want your dialogue to have a real quality that doesn't feel like 'TV talk.'

Authentic dialogue should sound the way people actually talk. In real life, people don't talk in complete sentences, they use the wrong words, they talk over each other, and nobody says all the perfect things at the perfect times.

You can think of the dialogue you write as being the conversations that real people have—the kind you would overhear someone having if you were hiding in a closet in their house."

One of the best ways to get a feel for how people actually talk is to pay attention to how people talk in the real world.

Get somebody else to read your dialogue out loud for you, because then you can really hear how it sounds. ” You might not realize you used a cliché until you hear it spoken out loud.

When you finish your first draft, either read your dialogue aloud yourself or ask someone else to read it aloud for you. If you notice any overused phrases, go back and rewrite them in a fresh way.

When working on your own screenplays, avoid these common clichés:

“The wrong side of the bed.”

“Think outside the box.”

“Loose canon.”

“Can of worms.”

“What goes around comes around.”

“Dead as a doornail.”

“Plenty of fish in the sea.”

“Ignorance is bliss.”

“Like a kid in a candy store.”

“You can’t judge a book by its cover.”

“Take the tiger by the tail.”

“Every rose has its thorn.”

“Good things come to those who wait.”

“In the nick of time.”

"If only walls could talk.”

“The apple doesn’t fall far from the tree.”

“The pot calling the kettle black.”

“The grass is always greener on the other side.”