I have a couple of possible obstacles - one is that I'm taking an online writing course at the moment. It's from the University of Iowa and called How Writers Write Fiction. It's been more time consuming than I had anticipated and I've had some trouble getting all the assignments in on time. As this relates to NaNoWriMo - the class will still be going on in November so that adds another layer of writing to do. I plan to just go ahead and count my class writing in my NaNo word counts even when I don't write a scene from my novel for my assignment. Still, there are the video lectures to watch, the reading and critiquing that will also need my time. Hopefully I can pull it all off.
The second thing - I guess it isn't an obstacle really - is that I plan to keep working on my novel in progress first. I don't think it has a whole 50,000 words left in it however, so if I finish it before the end of November I will start a new story. This plan is slightly off from the NaNoWriMo guidelines, but I'm not concerned about the novel police coming after me. I just want to boost my word count.
Stranger things have happened!
