No wonder you aren't inspired to sew!
Once that space is sorted, organised and clean, you will be enthused all over again. My room gets messy during a project, but I make sure it's all tidied at the end of it - including cleaning the machine & changing the needle. So next time inspiration hits, everything is good to go.
I think you need a system, some rules for yourself and less projects happening at once. You can do it - and once you are organised, you'll be whizzing out projects faster than you can collect them!