Not everyone does this, so I’m not making this concrete advice — but you may find it helpful to put you in the writing mood…
To get into the mindset for writing fiction, this may seem redundant but try freewriting.
Here’s the Wikipedia entry on what it is.
Doing it is not hard:
Freewriting (Mood) How-to

- Open up a simple Notepad (On a computer is good for this).
- Set a timer for 10 minutes.
- Just write for all of that time, whatever comes to your mind. No edits. Don’t worry about making sense.
- Don’t save it.
- When time is over, close the Notepad (or the paper if you wrote by hand.
The purpose is just to get your mental pathways open to writing after. It’s a warmup process.
I made a PDF of tools for this on Windows, Linux or Mac OSX. Join my list and I’ll send it to you. Update: it’s now a Checklist.