Story goal. You need one, and you need it clearly defined before you start writing anything.
If you’re like me, your ideas probably come from a mishmash of places. Conversations overheard at the grocery store. That movie that you watched and thought, “Gosh, what if instead of x, you had y?” Research from some seemingly unrelated topic. Whatever. You put it together and you get your basic premise, a main character, a setting, etc.
Now you need a story goal.
Your story goal is what your main character wants to do over the course of the book. It must be external. It cannot be “to grow as a person,” “to discover who she really is,” or anything like that. Don’t get me wrong. You want your character to grow, to have self-discovery, but on their own, these goals are not enough. You need something more.
If you are writing a romance, you probably need two goals, one for each love interest. They should seem to be conflicting, but able to be resolved in the end. Your storygoals cannot be “to get the guy,” or “to win over the girl.” A strong romance novel must have goals outside the romance. Maybe the girl is fighting her way to the alpha position of her werewolf pack, and falling in love with a human would be taken as weakness and ruin her chances. Maybe the guy is trying to win a science scholarship, and has no idea that the strange DNA he found belongs to the beautiful girl he’s been too nervous to ask out. You see where I’m going with this? Aim for external goals that bring conflict to the love story.
In my experience, goals work best when they are something you would not expect the main character to do. Let’s take J.R.R. Tolkien’s Lord of the Rings as an example. A story about a brave warrior taking the One Ring to be destroyed in the fires of Mount Doom–it could be good. But a simple, domestic hobbit, torn from hearth and home to face perils he never even knew existed? Even better.
If the story goal is something unexpected, then why does your main character do it? You’ll have to get creative to answer that. Frodo takes the ring to Mount Doom because anyone more ambitious would be corrupted by the ring’s power. His unsuitable-ness is what makes him suitable. You need to come up with a reason for your character.
When you make your character’s goal something unexpected, you’ll find that character growth and self-discovery often come along for the ride, as your main character has to reconcile himself with circumstances that are not what he would choose.