No judgment please

I recently confessed to having an affair with another man to my husband. He says he has forgiven me, and we are working through it. I am trying really hard to gain his trust back, and I think I found the most wonderful man for forgiving me, and still choosing to love me despite this mistake...problem is I still can't forgive myself for this. It's eating be alive. I've prayed to God for forgiveness, my husband says he forgives me...but how do I forgive me? Anybody else been in this situation? What did you do to get through your own demons? I can't take this feeling anymore....