Ryan Holiday: We want our kids to be ambitious. But the question is always ambitious for what? Fire them with ambition to be useful, he says. John Adams writes in a letter to his wife that it wasn't ambition to be rich or famous that drove him but a desire to leave the world better than he found it. Ryan Holiday: It can be easy as a parent to default to easier metrics and latch on to impressive but ultimately superficial goals. He says we have to remember that this is just a proxy for what actual success is as a parent.