It's something I often think about as at the moment I'm undergoing the healing process.
Like when people say: "Time is a healer." I often wonder what healing actually is. Is it when we have learned to accept what has happened? Is it when we think about what happened less frequently? Is it when we think about what happened just as frequently but we don't feel as much pain when we remember?
Is it forgetting?
I've discussed this before and different people have different definitions.
How do you know when you have healed? Can you ever heal? What does "healing" mean to you?