No matter how a child joins your family, their presence changes all the rules; they move into your heart and build new rooms, knock down walls you never knew existed. This is why new parents crave reassurance more than anything else: We tell ourselves, and want others to tell us, that we’re going to be wonderful parents. That our children will be happy. That their suffering will be light—or at least, never of a kind we cannot help them through. We have to believe these things, promise ourselves we’ll meet every challenge, or we’d never be brave enough to begin.