I hear ya. That's been a big part of my problem this year too. I'm always too tired to write on weeknights, and even on the weekends, I just want to sleep and veg out in front of the TV. Writing takes too much mental effort LOL. I got busy at the start of the school year and went too long without writing, and then I just stopped caring. I had to make myself sit down and try to write over winter break, and once I finally got going again, I got back into it. Since school has started up again, I've spent every day looking forward to the weekend so I could get some more writing done. I just have to stay inspired and not let myself go so long without even attempting to write.
I need to read more, too. I go through phases with reading, and lately I haven't been. I just bought a new Kindle, though (the charging port on my old one broke over the summer, so it's dead), so I'm hoping that will get me reading again.
Hopefully Vegas will bring more people crawling out of the woodwork this spring and summer. What we really need is new music! That always seems to help too.