What If It Was A Novel Instead...?

Change doesn't have to be a bad thing, right?

My first love was writing. Before I ever picked up a camera, played with an editing program or gave the stage a second thought - I had a pen in my hand. Every time I thought of an idea for a story, I thought of it as a novel first.

Lately, writing novels has been the last thing on my mind. I decided to give them a break because that was my default option. Now I'm thinking about how a story would unfold as a stage play or a screenplay, or a web show. I get the visuals in my imagination and I want to turn them into film or live performances.

But I'm starting to have second thoughts about Undead Again. Everything that is wrong with it, I'm beginning to see is wrong with the overall feel of the story. I'm realizing that it's not as dark as I'd like it to be. There isn't enough grit for me. I really want it to shine in certain areas and I don't really know how with a screenplay. I feel like I need to start the story again as a novel and that will help me write the screenplay.

Am I crazy for doing this? A lot of people may say yes. Maybe I'm making unnecessary work for myself, but how can I tell a story properly if I don't even know how it's supposed to be told?

What do other writers do? Do you choose if a story would be better told as a novel or a screenplay or stage play? Have you started one road and then later abandoned it for another? 

I'm going to do it anyway and see what happens...