Everyone who tries to create something eventually comes up against being told their work is flat-out garbage. Unfortunately I don't think there is a vaccination for it, and one must just take their chances and hope to build a mental immunity so it doesn't ruin your day. It's sad to say that many don't develop a resistance, and I think we lose many good contributors that way.
It's always good to take constructive criticism but when the negative commenter contributes little of worth, both in the comment and to the wider community, I think it is safe to ignore.
