How do I forgive?

I have now said the words. I have now truly meant the words and continue to do so. Now what? I feel that to forgive is to let go of the anger and to not seek revenge or act in a way to hurt back. I can't be happy in my marriage if I am always trying to punish my husband for his adultery. We're supposed to be a team, right? Supporting each other in what is good, not continually reminding each other of what was bad. When I think about what has happened, I don't feel the anymore, at least right now. I just feel such loss: a loss of trust, a loss of innocence, a loss of that never waivering faith I had in my husband. Maybe that was wrong, though, to feel he was invincible. He's a good man, but still only a man: frail and capable of succumbing to temptation. I see him broken now, and so full of pain for what he has done to me and our marriage. His pain, though necessary for me to see so I know he is repentant, cuts like a knife too because regardless of what he did, I love him, and we suffer together.
Lord, keep all harm from him! "block her way with thorns and wall her in so she cannot find her way" (Hosea 2:6) to him! Never let evil penetrate the gates of our tiny, longing to be holy, family, again.
Amen.