When one is sure of what he is doing and he is in his stage of self-respect, criticism can be taken in the right way. This will give the ability to look within when something goes wrong. Instead of justifying mistakes there will be the ability to learn from them and improve.
When someone criticises me, I need to remind myself that I have something to learn from it. Let me ask myself if there is at least a small aspect that I could learn from and incorporate in my life. Let me take this aspect and leave the rest.