Write an article based on this "Write your first draft quickly. Avoid reading over what you've written until you've finished. Make sure your story has a conflict. Incorporate dialogue when appropriate."
Focus on just getting your words out on paper. Don't worry if your writing is good. It's normal for a first draft to need a lot of revision! Give yourself permission to write badly! Remember, you don't have to show it to anyone until you're ready. Later, you can revise what you've written to improve your writing. It's tempting to go back over what you've written. You might want to evaluate its quality, improve problematic sentences, or add more to a scene. However, this makes it very hard to finish. The best way to reach the finish line is to keep going until you're done. Set up your conflict in your first chapter, and build it throughout the book. In the climax, your conflict should reach its peak and be resolved. The end of your book will summarize a grain of truth your reader should take away. Your conflict could be internal or external. External conflicts might be person against person, person against nature, or person against society. For example, Hazel wants to perform well in the play AND to get a date with Liam. She might face an external person against person conflict from her understudy, who's out to steal both her role and her man. She may also face an internal conflict, such as knowing a piece of gossip that could really embarrass the understudy. Dialogue helps your story progress, and it helps develop your character. Use dialogue to advance your plot, not just to fill up the pages. For example, Hazel might talk to her best friend about knowing the piece of gossip. Similarly, Hazel might overhear a conversation where the understudy discloses her plans to steal Hazel's part.