There are three fundamentals to a well-written story: Character, Plot, and Theme. And they belong in that priority order.
Character is all about how people feel. It is about personalities and reactions, about thoughts and feelings, and it is absolutely the most important thing in a story. You can have a boring plot with good characters, and you can have no deeper theme with good characters, but if you have bad characters, nothing will save your story.
Even though I just said that thoughts and feelings are the most important thing in your story, that doesn't mean you should come right out and say how your character is feeling. This is absolutely wrong:
"That's a great idea," said Sally happily.
"What is?" said Jack. He felt confused.
"Going to talk to your parents," said Sally happily.
There is an old mantra in the theater business: Show, don'