Novelist and essayist C. S. Lewis used to ask, ‘What is the most significant conversation you have every day?’ People would respond piously, ‘Your conversation with God, of course.’ ‘No,’ Lewis would reply. ‘It’s the conversation you have with your­self before you speak to God, because in that conversation with yourself, you decide whether you are going to be honest and authentic with God, or whether you are going to meet God with a false face, a mask, an act, a pretence.’