In no particular order:

1.  I’m tired.
2. I have too many other things that have to be done.
3. I have homework.
4. I have a 4-day weekend, so I still have 2 writing days available.
5. I have two essays to write (So, some writing).
6. I can’t concentrate for longer than 5 minutes at a time.
7. I’m a horrible procrastinator.
8. I’m also an optimist (As in “I totally have plenty of time to get everything done.”  I don’t, actually.)
9. I’d rather take a nap. (Done.)
10. I need an outline and some worldbuilding done before I write anything else.

• real life
• reasons I'm not writing
• writing