Some perspective from time to time is healthy.
First, a note by Robert Farley:
I used to try to convince people that there’s no way to conceive of a retort so clever, so devastating that the troll will actually throw in the towel, or feel bad about him/herself. By the time you hit the “reply” button, you’ve already lost the battle.
Second, some advice from Freddie deBoer:
What to Do When Someone Hates You on The Internet
Step one: Close laptop.
Step two: Go outside.
Step three: Look at the people out on the street.
Step four: Realize that not one of them has ever heard of you, heard of the person who hates you, or could possibly care.
Step five: Imagine that person out on the street, with you. Imagine them free from the power of their blog or their magazine or whatever, away from sympathetic commenters and connected friends, free from the distorting power of text-based communication, in all of their limited flawed fleshy humanity, with beating human beating heart, and feel better about them and about you.
Image Credit: xkcd.