I've often been given the career advice to not wear too many hats, which, of course, has just encouraged me to wear other hats, such as being a writer, being a curator, or just doing anything outside of the definition of an artist.
My definition of art is whatever an artist calls art. Us speaking could be an artwork, us sitting in the near-dark in your kitchen beside the dirty dishes and smoking, me thinking of what to say next.
People are disappointed if you're not entertaining and to be entertaining often means to be drunk.
Making your bed could be a piece of art, and writing a book could be a piece of art. You could also write a book that's not a piece of art, but that is a book, and it could be a book that was written by an artist.