You start to imagine: “What if other people are thinking this…?”
If less than 1% of those who actually go through and read your content bother to leave a comment, how many of those silent visitors are actually thinking the very same thing as this one extremely negative person?
Another 5? Another 10? Hundreds?
Essentially, what if there are a slew of other people who are thinking the exact way as this one (potentially trolling) negative commenter?
Chances are good that there are other people who agree with the negative commenter, but that there are also many people (often very vocal with commenting as well) who are perfectly happy with what you’re doing. Listen to the positive comments. Don’t just ignore them and assume everyone who hasn’t been speaking is as critical of you as this one negative commenter.
Take the negative commenter’s words into consideration, sure, but don’t go changing your actions completely just for him or her. Do things for your fans, those out there who like what you’re doing.
They get you. Concentrate on them.