We fear criticism so we conclude it’s better not to say anything but unfortunately when you don't speak up you may be criticized or ignored for not speaking. So you see a certain level of criticism is unavoidable, the key is to decide how you handle it because you cannot completely avoid people who will voice critical opinions of you and your viewpoint. Remember, what others say may be right or they may be wrong so don't automatically see all criticism as valid and worth responding to with a justification.
