Artists are often insecure about their art, and whether or not if what they produce matters in their chosen discipline; be it painting, writing, or filmmaking. Part of that issue is this: What constitutes originality, anymore?
I like this quote from director Jim Jarmusch concerning his domain...
Nothing is original. Steal from anywhere that resonates with inspiration or fuels your imagination. Devour old films, new films, music, books, paintings, photographs, poems, dreams, random conversations, architecture, bridges, street signs, trees, clouds, bodies of water, light and shadows. Select only things to steal from that speak directly to your soul. If you do this, your work (and theft) will be authentic. Authenticity is invaluable; originality is nonexistent. And don’t bother concealing your thievery – celebrate it if you feel like it. In any case, always remember what Jean-Luc Godard said: “It’s not where you take things from – it’s where you take them to."
—Jim Jarmusch, The Golden Rules of Filming
I found it on Wikipedia; unfortunately the link to the original source -- MovieMaker Magazine from October of 2005 -- is broken.