It is not that God has difficulty hearing us, it’s that we have difficulty hearing Him. Prayer is really a means by which God prepares our hearts and minds to “hear” Him, i.e., to perceive His will.
…sometimes God does tell us to change course for a while. Sometimes God moves us away from what He had given us to do…. The challenge, for us, is to hear His voice… and trust His guidance as Jacob did.
God is our refuge and strength, a very present help in trouble.
Therefore will not we fear, though the earth be removed, and though the mountains be carried into the midst of the sea;
Though the waters thereof roar and be troubled, though the mountains shake with the swelling thereof.
Selah. ~Psalm 46:1-3