Wikipedia:GREAT

If you are stressed by a feeling that "articles have to be perfect", try to ease this stress by having a little fun. It may be a good idea to take a break from the article that you are getting stressed about, or even take a itself and go offline. Stress and frustration are unhealthy and can impair your judgment. Continuing to edit while feeling this way may be counterproductive to your goal of writing a great article and may lead to fatigue. You'll be surprised what a fresh pair of eyes can see.

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Wikipedia