The writing thing

So I've been so lazy about the writing thing. I want to blame 15 in grad school but I'm afraid that I'm just lazy. I want to get about 7000 more words for a short piece that I am trying to write. I know where the story is going and I know how I want to get there but I am just so tired. I really want to finish those 7000 words by like Wednesday at the latest but I wanted to that done by last week. I am beginning to question my desire to write. If I really want this I will do it. In my mind I can just hear the buts, but I'm tired, but I have work for end of term to do, but I want to do something else. I just don;t know what to do about the buts. I think back to NaNo this year I did all my classwork, my work work and I still had time to play games with friends plus write a 52,000 word novel. I need that again. I want that again. I just need to find what gave me the energy to do that in November and get it going again. Okay my whine fest is over now. Back to trying to write... again.