Holy Spirit?

We were meditating on the Presentation in the Temple, and particularly on Simeon's response to the Holy Spirit's prompting to go to the temple, and his response to holding the Christ child. Kelly, age 8, asked, “How do we know if the Holy Spirit is really speaking to us?” She deeply considered this question, wondering, “Is it in a dream, or while we are awake? And how do we know for sure that it is the Holy Spirit, and not just our own mind?” This is a profound question.