Luck has nothing to do with it! Of course you want to be Irish. Look what it did for Daniel Day-Lewis, Sinead, Maeve Binchy, Roddy Doyle, JFK, Seamus Heaney, Angela's Ashes, and all those Riverdancers. But until now, the secrets of how to be Irish have been hidden in a Celtic Twilight of blather and blarney. . . .