As ever, these things dovetail and I've had a couple of online interactions with writers talking about how self belief can be a barrier. This can take a number of sideroads in terms of impact: 1. I don't believe in what I'm writing, and therefore don't have the confidence to keep going. I think this is incredibly common. Few writers I know don't get to some part in the process without deciding what they're writing is the worst kind of drivel. Some jack it in at that point, becoming the perpetual never-completers, some keep going and hope to write through it, some take a bit of a break and then come back to that idea. For me, each works at different points in the process. Sometimes, too, that project isn't actually going to be a goer. The idea may not work in the form you're trying to work in. The idea might be weaker than it first seemed. None of this means the writer isn't a good writer, or that they should give up. It just means the project is...