An additional quick note about the mud.
The mud is also an old project, something that seems to be going nowhere.
Try write something new. Something different.
Even if you're in the middle of a grand epic fantasy novel and you feel like you're losing traction, mix it up and try something new for a little while. Because if you work on something long enough and it isn't finished, you can start to get bored with it and the passion that you once held towards it starts to fade. When this happens, stop, save that file, open a new one, and do something different.
Who knows? Maybe this new thing will be the story that breaks you into the publishing business. And if you really liked that old story, you can always come back to it. I have five completed novels at this point, and one day I plan on going back to the first two (these need a lot of work when compared to the rest at this point) and re-working them.
But not yet.