People who criticize will help us in knowing ourselves. But they should be genuine. Once the criticisms are found be real, we should tune ourselves correctly so that we have a better presentation. It will help us in improving ourselves in many accepts of our life.
But there are some people who will criticise for the sake criticising you. There will not be any truth in that and it will be false. In such case there are two ways to stop that. One is making hue and cry. Then everybody will understand that there is some thing in our argument.They will support us and critics will be silent.
Sometimes I feel it is better to keep silent for those remarks as their nature is like that. Nobody will support those people and try to be away from them thinking that if you drop a stone on cowdung it will splash on your face only.