There are two kinds of criticism:
(1) Unjustified criticism. One day Henry Ward Beecher went to his church to preach. As the great orator placed his Bible on the pulpit he noticed a blank sheet of paper with the word "fool" written on it. Beecher's keen sense of humour seized the moment. He lifted the paper for all to see, then his booming voice filled the church as he announced, "Generally I receive letters from people who write and forget to sign their name. This letter is different. The person has signed his name but forgotten to write the letter." Jesus said, "Offences will come" (Luke 17:1). So expect them. And remember, attack is a sign of respect. You're getting noticed. You're making a difference. So when you are criticised unjustly, forget it and move on. Jesus did!
(2) Justified criticism. Criticism that's justified has a measure of truth in it. An old Arab proverb states, "If one person calls you a donkey, forget it. But if five people call you a donkey, buy a saddle." Dr. James G. Kerr, a management psychologist, points out that a major deterrent to gaining information about ourselves lies in our natural reluctance to discover anything about ourselves that isn't flattering. When we erect defences against our own inadequacies and try to hide our faults from ourselves and others, we close the door to a vital source of self-knowledge and therefore deny ourselves the joy of Spiritual growth. Stop hiding from the truth. Every one of us can improve what we're doing and the way in which it's being done. As they say, "The largest room in the world - is room for improvement!"
The above is taken from The Vine