A friend of mine posted this on Facebook, and I liked it so much I decided to post it here as a reminder.
It’s from the 1920s, a time in which criticism was not a form of aggression through the web.

Yesterday I was asking about helping my fans lose their shyness.
Now I’d also like to point out that criticism – public or private, in the form of a review posted somewhere or a direct message to the author – is what keeps writers going, and what helps them improving.
Give it and take it cheerfully.