I'm a production artist so now I can't really watch a movie or play a video game or see a billboard or something without wondering how they did a certain thing or if I see a small continuity error or something wasn't masked out properly. It doesn't detract from the experience, in fact it adds to it. When I see something that amazes me, I think of how I can recreate that by developing new techniques or using a piece of software I've never used before. And, I take a mental note of how a story affected me and what part really affected me and I use that as a reference for my own things to reproduce that genuine feeling I have of wonder, excitement, sadness, or fear.
And, as an artist working in the industry, when I see stuff that other budding artists have done sure I can spot things that could be improved. But, I understand where they're coming from. I've heard a quote that I took to heart "Never criticize, always encourage." And, so that's what I try to do.