Remember that unjust criticism is often a disguised compliment.
“When you are kicked or criticized, remember that it is often done because it gives the kicker a feeling of importance. It often means that you are accomplishing something and are worthy of attention.” —Dale Carnegie
Do the very best you can.
“I do the very best I know how --- the very best I can; and I mean to keep on doing so until the end. If the end brings me out all right, then what is said against me won’t matter. If the end brings me out wrong, then ten angels saying I was right would make no difference.” —Abraham Lincoln
Analyze your own mistakes and criticize yourself.