We don't talk much about humility in AA, almost never use the word. Maybe that is because, as the spiritual adage has it, if you think you are humble, you are not. But I see enough of freedom, serenity, healing, and unselfishness around me to think it must be hiding there somewhere.
In centering, we begin to leave aside our own thoughts and images and feelings and to make space for the Spirit to begin to operate in us through the gifts. Outside the time of prayer we begin--and often others begin before us--to perceive the presence of these wonderful gifts in our daily lives. These are the fruits by which we judge the "tree" of our centering prayer. It is only through these fruits and the healing they represent that we can know the spirit is working in our lives through this deep, quiet communion with Love at the center of our being.