Open Our Ears,Lord!

This is from my journal :
I am afraid that God has shut the ears of some among us that they may not be able to hear nor understand what God is trying to say. They come, they sit, and nothing changes. They still live their futile, empty lives hoping tomorrow will be better but it will not. I pray, I preach, I plead and nothing seems to change. Is it me ,Lord? Am I not sounding the trumpet of Your Word clearly? Is it me ,Lord, who needs my ears cleaned out and my heart tender? Am I wasting my time, energy and effort?