To commit or not to commit

Do you still enjoy writing? (and what to do if you don't). At the moment I am learning not to worry about what others might think of what I write and just write.
How to know when you should be writing: a flowchart.

As per threat, I'm starting February by rewriting my NaNo 2011 story from scratch. Am now 4,200 words into the story. One of these days I'd actually read what I wrote in November, preferably after the current draft is finished.