Internal dialogue

Do you talk to yourself? It's not as bad as some people claim.

Do your characters talk to themselves? Do they carry on internal dialogues, loud enough for your readers to hear?

You can do a lot with an internal dialogue.

You can expose the hypocrisy of daily interactions. "What a nice dress," I said, smiling. I can't believe she wore that ugly thing out in public.

You can reveal important information about your character. "A car backfires. I jump. I don't know how long it will take for the memories to fade."

You can create a mood. "I walk into the house and kick off my shoes. It is so good to be home. I grab a Coke and sink into the couch."

Let your reader know what your character is thinking. It can be very revealing.