Be careful not to take criticism to heart. The idea of being satisfied with yourself only if other people are satisfied with you is a form of slavery. Sometimes criticism is helpful and sometimes it’s just a reflection of another person’s ignorance, not a deficiency of your own.
Criticism hurts because we want to be understood and accepted. But we are at our strongest in the moments when we are content not being understood and accepted. There is a place within where we can find this strength, which is really just a place of rest, it’s where we meet our true self and realize that we’ll be okay regardless of what anyone else thinks of us.