How to not get affected by criticism?
Is it even possible to not overthink it?

Whenever we are affected by criticism, , an important reminder is to ask ourselves is – how do we feel when the opposite happens? How do we feel when we hear praise? 

Because if we feel really good when someone appreciates us, we unconsciously hand over the remote control to our emotions. That remote control will determine our state of mind for good and for the bad. 

To not get affected by criticism, start with not getting affected by praise.
Calmness is power.