Apologies can be uncomfortable and they can take work, but a good apology—an authentic apology—requires listening, taking responsibility, and attempting to fix the situation. From TED-Ed:

This TED-Ed about how to say “I’m sorry” was directed by Vitalii Nebelskyi with and-action, in collaboration with Character Lab, a nonprofit organization that gathers research-based guides and actionable advice for parents and teachers.
