Spending time with God in prayer opens the door for the outpouring. Hearing God's voice allows you to be sensitive to the Holy Spirit. That simply means you anticipate and expect to feel the power of God. Pray often. Pray sincerely. Pray about everything. Ask for direction and guidance. Every answer you need you will discover through prayer.
For more information on Outpouring, pick up the latest book by Sonjia Dickerson called, "Outpouring" available on this website.