Mistake 2: There’s no conflict. Everyone gets along.
Tolstoy started Anna Karenina with the sentence: Happy families are all alike; every unhappy family is unhappy in its own way.
He didn’t write about happy people. Happy people, no matter how wonderful they are in real life, are boring in fiction. If everyone in your novel is happy, your readers won’t be–they have no reason to read. By all means, have a happy ending, but make sure that your characters suffer along the way; make them work for their happy ending.
Writing a novel? Avoid these common mistakes.