I have had a quote by C.S. Lewis up on my site for quite some time. He basically mentions (as I have in earlier posts) that we don't create, we only build. It helps keeps me grounded. Many times I have the desire to be originally creative or discover something that another has not. These motivators often leave one feeling empty and frustrated. Primarily because when you think that you have "discovered" something, chances are someone has discovered it before you.
Many of the composers that have influenced me seem to have found their motivation in something that was beyond how they would be perceived. If you have not read Robert Crow's translation of Enzo Restagno's interview with Arvo Part please read it. I found that Part's real personality and originality (musically) came out when he invested in someone or something other than himself. I believe that today's art is often driven by credentials and the process rather than the end product.