Alan wants to credit his god for his ability to choose "the right thing", rather than his upbringing, genetics and all the other inputs he's experienced during his life. What he doesn't acknowledge is that, having been conditioned in the way he has been, what he wants more than anything else is to believe that he's doing what his god wants. So if he wants a choc-ice, but chooses not to have one because "the right thing to do" is give the money to charity instead, he's not denying himself. He's doing exactly what he wants to do, which is conform to what he believes are the wants of his imaginary friend.
It's pathetic and depressing. I don't know why, after decades of disappointment, I still hope for any credible arguments from theists at all. I'm so desperate for there to be an explanation for life, the universe and everything, I just keep on reading. John Stuart Mill and Thomas Paine make infinitely more sense than CS Lewis and Rob Bell, unfortunately for my peace of mind.