When is a story idea ready to be a Novel?

When does an idea become book-worthy? Storytelling can take so many forms. YouTube videos, blogs, lengthy threads on Facebook or Reddit. Heck, you can tell a pretty compelling story in with memes. When I was working on The Duck, I came across a youtube video about the Canada Goose. It was a similar type of story told in video instead of print. 
(https://youtu.be/Aw-jES3OvVw)

I think an idea becomes book-worthy when an author decides to put in the work.  I’ve got a list of story ideas. I’m sure just about everyone does somewhere in their mind. But an idea isn’t worth anything until you do something with it. It might be a poem that takes 5 minutes to draft and a month to polish. Or a short story, novella, or even a novel. It just requires an act of will and some follow through.

I remember watching an author talk about writers block (I can’t remember who) and they said they put in 3000 words each day no matter what. Some days they are driven by intense inspiration, others a brutal slog. But at the end, after editing and polishing, this author couldn’t remember which parts happened on the inspired days.

The difference between an idea and novel is work. Plain and simple.