Criticism can be harsh sometimes but sometimes it’s just what we need.  In this particular proverb God let’s us know what happens when you do not pay attention to criticism.

“If you ignore criticism, you will end in poverty and disgrace; if you accept criticism, you will be honored.” Proverbs 13:18 NLT

When criticism comes either with malice or with love, accept it, listen to it, you never know it could actually be valid.  You may be hurt at that moment, but in the long run you will be honored.  Ignore it and it may well be your down fall.