Consider the Source of the Criticism

Being able to tell the difference between constructive criticism and destructive criticism can begin by: 

• Doing a self-check-in before responding: If you automatically react defensively, you won’t be able to tell if the comment was destructive or constructive criticism.
• Evaluating the emotional state of the person offering criticism: Those who feel angered, insecure, or jealous are most likely to launch destructive criticism at others in an attempt to satisfy their own sour mood. 
• Considering whether they’re speaking constructively or destructively: Does their comment offer you a way to improve upon the issue they’ve pointed out?

When offering criticism, remain: 

• Mindful of your emotional state. If you’re feeling upset about something (even if it’s related), try and check your temper or tone. You’ll feel better about yourself if your criticism offers a solution to the other party.