The Source of Power - Ps. Susan Dunn // Your HEART is your source of power! How we live our lives depends on the conditions of our hearts. If you have a hardened heart, not only are you blind but you are unable to hear and you are overcome by the darkness. The 3 steps to guard your heart are to guard your mouth, guard your eyes, and guard your thoughts. Church, guard your heart above all else, for it determines the course of your life.