If a person has built a sound character, it makes but little difference what people say about him, because he will win in the end.
Writing is a deep-sea dive. You need hours just to get into it: down, down, down. If you're called back to the surface every couple of minutes by an email, you can't ever get back down. I have a great friend who became a Twitterer and he says he hasn't written anything for a year.