Is your mind at peace? Perhaps you feel that you cannot answer this question unless you are able to say that there are no problems in your life, that everything is as nearly perfect and satisfying as it should be or as you hope it will be.
When you think of the times you have experienced real peace of mind, have there not been times when outwardly there were problems? Perhaps you were as Paul: … afflicted in every way, but not crushed; perplexed, but not driven to despair; persecuted, but not forsaken. … But you had peace of mind, real peace of mind, because you were so filled with the realization of God's presence that you knew, with an unshakable knowing, that God was all and all was well.