There is a strange and unpleasant phenomenon that I have experienced on multiple occasions. I don't think there's a title for it. I might be the only person to experience this (#delusionsofgrandeur). I take it upon myself to name this beast.
Discriberity: (dis-cry-bear-ity) n. an intense inclination to do anything other than write, despite there being no logical reason not to write.
Example: Sue experienced a bout of discriberity, as she reread her plot outline, designed costumes for her characters, and taught herself to draw instead of writing the first words of her novel.
Clarification: this is different from writer's block in that in writer's block there's often a reason for avoiding writing, such as a plot problem, characters not cooperating, or some other complication that needs solving. In discriberity, there is absolutely nothing holding the writer back. It is, of sorts, a mental block.
I reread my plot outline.
I designed costumes for my characters.
I taught myself to draw.
I even wrote a blog post.
There's nothing left to do but write the first words of my novel. With great reluctance, with an overwhelming sense of foreboding and discriberity, with sadness that I have to leave you with such a short blog post...
I go to my doom.