Your identification with the High Priestess suggests you possess inherent good judgment, in the form of strong intuition. She may indicate that reason should take second place to instinct. Your head must trust in the wisdom of your heart for a change. Yet, she is also an aide by nature, and her presence in certain parts of your spread could be indicative of someone close to you coming to your rescue with their own intuition. Intuition is most effective at seeing what is hidden to the senses, so the High Priestess may also come as a warning of concealed facts or influences that are, or will be, important to you.
To get the full traditional meaning and interpreation of The High Priestess, I suggest you visit Trusted Tarot and their The High Priestess page.