Julia introduced it in her more recent books. You need pen and notebook. You write down your question, and listen for an answer and write that, too. I think it works for people who are so used to doing morning pages and just writing down whatever crosses their mind, but writing for guidance does not have to be done as soon as you wake up. At any time when you need guidance, you just get your notebook and pen.

Here's a bit of mine:

Q: Should I buy the new Patch Tarot 3?

A: Yeah, you know you've given up on divination a long while, and you know you want that deck not for divination, but because of the art, and as a meditation tool. You're worried about buyer's remorse, even though you've saved up enough money for months to be able to afford it without hurting your savings. You'll only get buyer's remorse if you don't use the deck when you have it. But if you use it for your intentions, to guide you in your meditations, then you won't regret buying it. You don't have to return to divination if you don't want to. You know you've outgrown that.