Ann Friedman recently created The Disapproval Matrix to better understand where criticism comes from and how to deal with it.
Frenemies: Ooooh, this quadrant is tricky. These people really know how to hurt you, because they know you personally or know your work pretty well. But at the end of the day, their criticism is not actually about your work-it’s about you personally. And they aren’t actually interested in a productive conversation that will result in you becoming better at what you do. They just wanna undermine you. Dishonorable mention goes to The Hater Within, aka the irrational voice inside you that says you suck, which usually falls into this quadrant. Tell all of these fools to sit down and shut up.
See also Friedman’s Hierarchy of Haters.