Do you go on the plane carrying your own bags? If you are one of the people that check-in their bags, then forgiveness is the same practice. Don't mistake forgiveness with acceptance. The act of forgiving is simply letting go of the energetic burden, and saying I release the anger energy that is only going to hurt me and I let you Divine Power, and act on my behalf. I release the burden of being fully charged with negativity and let you Divine Power compensate me, and take care of the other person, coz now it's their karma, not mine.