New Year

I keep feeling the need to write but I can't seem to come up with what to write. I sit down and then nothing comes out. In my head it feels like if only I could come up with the story then it would just flow through my fingers but that doesn't seem to be happening. It's funny because I've never had the desire to write until the last little while and now I can't seem to shake the feeling. How do write when you don't have anything to write but need to write?