Seems appropriate for just about any day:
There are times, O Lord, when I feel completely helpless to alter the circumstances in my life. I am powerless to turn around a bad economy, or ensure a favorable report from my doctor, or guarantee my spouse will always love me, or make sure I am never in an accident. When I sense that I have no control over what is occurring in my life, my energy lags and fear and frustration begin to overwhelm me. Let your spirit of peace spill freely over me until I recover my inner calm. Help me remember that it is not control that gives me peace, but knowing that I am loved and beloved by the heart of heaven.