[Aziraphale nods. The 'stupid voice in my head'... definitely rings a bell, he's quite familiar with it. His sounds a lot like a certain permanently-smiling Archangel. But even though he's shared quite a bit with Rich, there's some things he's not ready to share yet, so he just nods instead.]

I don't think denying forgiveness when it's given to you is the answer to that, then. That only makes the person forgiving you feel bad- as well as yourself, so nobody wins. I think... perhaps, you could work hard to earn it instead?