As of today, writing is not my day job. It's my secondary job that allows me to escape the many, many things that occupy my life. It's not a bad thing, necessarily, that I have things that I need to escape.
If anything, it's a good thing.
The way I see it is, I filter much of my own viewpoints into my writing. Problems, issues, feelings, frustrations: all of these come into my writing through daydreaming. I read an article once (I want to say it was on Litreactor, but I may be wrong) in which Chuck Palahniuk said that some famous authors "write in the shower" and on the toilet, and in the gym, etc. What he really meant was that people are always conjuring stories, developing characters, and creating themes throughout the day.
In this same way, I would suggest that I'm writing in my day job. Frequently. All the time. Okay, okay, from the moment I sit down at my desk. But the reality is my daydreaming is really just my own writing organization. I'll admit, there have been times that I find that I "work" better (read: write, according to the article) at work than I do at home or in my other "writing" places beyond my desk. I suspect that it's a mental thing encompassing needing to get to work and being all about business in my room, but as of yet I cannot prove it.
Now if only I could find the time to actually write the sentences and stop stringing together ideas and thoughts and concepts. Or I could just finalize & edit the stuff I have now.
Saying that you write all the time is probably a bit of a misnomer. It's easy to say that I write, but I don't do any actual writing...at least not most of the time. Instead, I add to my idea bank, thinking of new possiblities and building my metaphorical idea jar for my future writing career.