The premise of your story is fantastic, and the characters are well-defined. Yet something seems missing. Your plot is just going through the motions, or maybe the central challenge of the story just seems too easy for the characters to overcome.
It’s not… bad, it’s just not exciting. Or funny. Or stirring. It’s too straightforward and it has the characters do boring things to achieve their goals. It just feels limp.
It’s time to go back to the drawing board, yeah. Sadly you’ll need to start over from page one. But if you’re ready for a radical departure, try one of the following complications (or, obviously, make up your own) to wake things up:
What if the Bad Guys already won? Your villain wanted to turn the hero’s family into zombies. What if that happened? What kind of psychological changes would your hero have to go through to fight their own loved ones? What if the MacGuffin everybody was looking for was actually fake, a complete myth? This is sure to get your characters agitated.
How would your plot change if it was set 100 years ago? Or 100 years in the future? You don’t need to take your heartbreaking coming of age story and make it over into science fiction. Maybe the future/past world is very subtle, maybe it just means cell phones work a different way. Maybe you don’t have to define the setting’s timeframe at all, you just keep it hazy and complicated. Alternatively, maybe the story is actually being told by the grandchildren of your protagonist. Maybe your hero failed… but their descendants still have a chance to make things right.
How many characters/set pieces/words do you really need? One of the big reasons that plots fail to sing is that they’re too bloated. You have too many people doing too many things–look at every character in your story, and what they do. Would it be more interesting if the protagonist had to do their job, too? Are there characters who are just there for emotional support, or a funny scene? Cut ’em out! Find a way to make their scenes work without them. Even better, cut out the big turgid set pieces you love so much but which don’t advance the plot. Finally–are you sure this needs to be a 300 page novel? Would it move faster and be more exciting as a 10 page short story?
What if your central plot was actually a ruse? Your villain stole the McClintosh Diamond from the National Museum. It’s clear she’s going to build a death ray with it! Or is she…? What if the whole plot of your story is just cover for what the antagonist is secretly doing (bonus points if it’s a cover for what the protagonist is up to, and you keep the reader guessing until the last page)? If that doesn’t work, think about what kind of diversion the antagonist might stage to throw the hero off the trail, something they could do early on that ties your story up in knots? Red herrings can be frustrating if used too preciously, but they’re great for building suspense, especially early in the story.
Is this waking life? Or a dream? The worst ending you can possibly have for a story is “…and she realized it was all just a dream.” But what if that’s the first line of your story? What if your protagonist thinks they’re having a dream/vision/acid trip… and then it turns out to be real? What if you keep the reader in the dark as to what is real and what isn’t? Your straightforward plot is suddenly a deadly game of chasing the white rabbit–is the goal in sight? Does it even exist? Or is it more real than real? Blow our minds, man!