Whoever took your motivation, took mine as well. I have an essay and a 10-15 pg paper to write. I received an extension on 6 assignments due to moving/internet issues. I am half-way done with the essay, but getting bored with the topic so I end up going and doing something else...watch a movie/unpack.
Sine we just relocated out of state, I am thinking that for the last 4 years I had been in the same computer room and grew accustom to the room. Now I am in a larger space with white walls. I tried to get everything set up the way it was in the old place, but it's not working.
My family and friends say I am burnt-out...which is a possibility. I am working on my Masters degree after taking a year off to work after my Bachelors. I too lack the motivation to press on. I ended up using my week between terms to catch up on assignments and now I have 2 left and started the new term today.
All I can tell you is that it will be worth it in the end and try to keep focused on the larger picture. Try to remember why you chose this profession and think of the alternatives if you "quit".