Mark Batterson said this quote

I have a handful of prayers that I pray all the time... One is that God will put my books into the right hands at the right times. I've prayed this prayer thousands of times, and God has answered it in dramatic fashion countless times. The right book in the right hands at the right time can save a marriage, avert a mistake, demand a decision, plant a seed, conceive a dream, solve a problem, and prompt a prayer. That is why I write. And that's why, for me, a book sold is not a book sold; a book sold is a prayer answered. I don't know the name and situation of every reader, but God does, and that's all that matters.