I am capable of moving on from past offenses and wrongs people have done to me.

Nobody is owed your forgiveness. Worth saying first, because a great deal of advice in this area quietly assumes otherwise, and it leaves people feeling they have failed at a moral task they never agreed to.

Moving on is a separate operation. It concerns where your attention lives, not the moral standing of whoever did it. They can remain entirely in the wrong. The only question is whether they also get your Tuesday evenings.

Some people keep a letter unopened for years. Not sent back, not burned, just no longer read every few months. That is often what this looks like in practice.