C'mon girl. I mean; sleeping on the couch in your own home, while the bed is cluttered. Sheesh
If you do one job, make it to clear that bed before Christmas. It will make you feel better, it will probably make you sleep better. Once you get one job done it's easier to get the others sorted out. Forget the other stuff, and do the bed. it's a start. I know you say it needs space clearing for what's on the bed now, but I'm sure you can file that stuff bit by bit. You could put some of it on the couch I suppose!
Set your PC up to remind you of things that need doing, and places you want to go.
Keep me posted on your progress, I'll be looking out for updates!