What a great question. The short film above was made by the people at The Great Discontent ("a journal of interviews focusing on creativity, risk, and what connects us as artists") who set up a booth at the designer/developer gig Brooklyn Beta in NYC and filmed responses to the question from some of the attendees (including Tina Roth Eisenberg from whom I sourced the link).
There's a real spread of responses which surprised me. I guess it depends on how you interpret the question, and that many would say that they feel happy that they're doing good work. But I could identify more with those who seemed to restlessly believe that acheiving creative satisfaction was a never ending pursuit. Which leads me to ask the question: can you ever be creatively satisfied?