Upright
You may know something you haven't said out loud yet. The High Priestess sits between two pillars with a scroll half hidden in her lap: the answer exists, it just isn't ready to be spoken. This is a card for listening rather than deciding, and for trusting the quiet read you already have.
Reversed
Reversed, the signal tends to be drowned out, usually by other people's certainty or by your own need for an answer today. It can also point to secrets kept longer than they're useful, including the ones you keep from yourself.
If this is your card this month
What do you already know that you keep talking yourself out of?
A card is a prompt rather than a forecast. It doesn't know what will happen, and the useful part is what you do with the question it hands you. We make that case at more length in not a prediction, a mirror.