The fact that you were able to master forgiveness is wonderful-forgiveness is good for your body, your relationships, and your place in the world. I don’t think it’s possible to forget (at least not on purpose), but you can decide to let it go, and not harbor ill will based on what happened. I try to do this but it takes practice especially when what was done was particularly egregious. My mother for instance has done some very egregious things to me . I forgive her because she can't help she's a Narcissist. This is the one that takes constant practice for me.