“That sounds good, but—” Nat thought about how years of acting a certain way could wear ruts in a person’s brain, so that you would keep slipping into the same habits without trying to. “But it’s not easy,” said Nat. “I know it’s not,” said Dana. “But the question was, given that we know about other branches, whether making good choices is worth doing. I think it absolutely is. None of us are saints, but we can all try to be better. Each time you do something generous, you’re shaping yourself into someone who’s more likely to be generous next time, and that matters.