Yes, it is healthy to put the past behind if one does not deny the anger inside of oneself. My point in saying that trying to forget is unhealthy is this: So often we still remember the deep injustices against us. It often is unrealistic to completely forget what happened. We do not develop a kind of moral amnesia when we forgive. Instead, we remember in new ways, without the build-up of strong anger. We need to be gentle with ourselves when we remember details of cruelty against us. Such remembering does not mean that we have failed to forgive.