If their harshness is accompanied by helpful feedback, take what you can from their criticism and use it to improve your work for the future.
If they are harsh for the sake of being harsh, try to return their harshness with a smile and kindness, as it is likely something bothering them in their own life, not you. They may start to mirror your kindness as well, improving the situation for everyone.
Contributor: Stacy Caprio from stacycaprio