I've planned out a good deal of the plot. I know what I want each character to be, their names, and what will become of them in the end. I've internally reasoned how the lore works.
But I can't progress.
I haven't finished the plot, though I know what I want to try and reach, and I can't even bring myself to "wing it" using what I have already.
If I try to start again, it hurts. Not just an emotional "tough to go on," but an actual physical pain in my joints and head that I thought were from disease, but I'm certain it's writers block. They appear to be psychological pains, as I despise the experience of feeling them but they do not sting like a physical injury, and I'm worried that it will stop my writing permanently.
How do I stop the pain and just get working?