If you learn from your suffering, and really come to understand the lesson you were taught, you might be able to help someone else who's now in the phase you may have just completed. Look for the learning in suffering. You can fight with all your might against sin and your sin nature and yet you will still find yourself surrounded by failure and defeat. You can pray fervently and sincerely but it will seem that He does not hear. It is not that He is merciless but rather because of His mercy that He does not help.
Self never changes into anything but more of the same.
The blood purchased our pardon and forgiveness. The Cross-purchased our deliverance from what we are. It was on the Cross of Calvary that God, in Christ, dealt fully and finally with self. As we exercise faith, we begin to receive the benefits of that finished work in experience. It is what He did there that counts, and what He did becomes a force in the life of a Christian.