I have been praying and reflection much this past week about the power of the Holy Spirit in our lives and how He can accomplish incredible things if we but open ourselves to His grace. This called to mind a prayer written by Cardinal Mercier that I have often prayed and found to be incredibly powerful:
Prayer to the Holy Spirit
O Holy Spirit, Soul of my soul, I adore You. Enlighten, guide, strengthen and console me. Tell me what I ought to do and command me to do it. I promise to be submissive in everything that You permit to happen to me, only show me what is Your will.