Alex Lickerman, M.D., gives us this advice:

ACCEPTING CRITICISM

For me, this is all about silencing my ego. This is how I try to do it:

1. Don't respond immediately. I presume my first reaction will be dismissal based on my desire to preserve my self-concept. Much of the time, however, I fail at this. But that's okay because I can always...
2. Consider the criticism in a cool moment later. Just because I may vigorously defend myself against whoever may have criticized me at the moment they bring a criticism up doesn't mean when I'm done I automatically dismiss their criticism from my mind or forget it. But in order to do this I must...
3. Spend time on a regular basis asking myself how I can improve. If I've established this as a habit and do it alone when I can have an honest dialogue with myself, I just may have a chance to consider a criticism on its merits. Which is when I try to pause and ask myself...
4. What if what s/he said is true? I ask myself this question as a hypothetical and begin to explore the implications. Which is how I.

Lickerman then talks about sorting out the criticism. http://www.psychologytoday.com/blog/...nage-criticism

I have never been fond of criticism yet understand how insightful criticism is of benefit.