If someone says something critical about you, stop to consider whether what they say is true or false. If it is true, then they have pointed out a fault that you can now address. As such, they have benefited you. If what they say is false, then they are in error and the only one being harmed is them. Either way, you suffer no harm from their critical remarks. But the one way in which their remark could cause you a real and serious harm is if you were to let it provoke you into a state of anger.
