It is becoming difficult for me to separate the two.
I don't see how a photographer (and not just a button pusher), can really NOT do art in some form or other. Now that I am a full-time photographer, it is a business.
Just finished my first book in a series of small town documentaries. The books are just something I have to do, can't really explain it because they are money out of my pocket with no way to make a profit. Still, I may decide on some videos to sell, prints to sell, or possibly a gallery in each town.
DIY publishing has taught me a lot. I can only imagine what I will experience and learn with a gallery.