I can relate so much to what you are saying, I have a relective essay due in on Friday, and have sat most of the mroning just staring at it. Actually knowing what I am doing and if what i have got so far is right would help.
I do have other issues going on which don't help much, but even so, I
know I have to get it done, but can I be bothered...in a word no!!!!
I keep hoping the assignment fairy will come and do it for me.
As has already been suggested, set some time each day to get some done, then do something you want to do, you may find that once you get going you want to carry on and do some more, that sometimes happens to me, especially when deadlines are looming.
Good luck.