I like what Dave M said: "...interpretation is totally in the eye of the beholder, and many declare themselves judge of what is “creative” and what is not" and the notion of "an artist in their own realm."
Or like @zackgonzales said about being true to yourself while changing yourself.
I'm creative when I turn my ideas into something I've never done before or I transform my environment (this has many meanings) to make a new experience. Just because someone else may have already done it or done it "better", it doesn't make me any less creative "in [my] own realm" as long as I'm using my unique ideas to guide me.