Peace of mind has nothing to do with the external world; it has only to do with our connection with God. Love really is the answer. We're here only to teach love. When we're doing that, our souls are singing and dancing. When we remind ourselves that we are spiritual beings, that life and love are the flame eternal, that's when our soul is nourished.
The experience of prayer is the experience of coming into full union with the energy that created the universe. What Christianity has to proclaim to the world is that that energy is LOVE and it is the well-spring out of which all creation flows. It is the well-spring that gives each one of us the creative power to be the person we are called to be -- a person rooted and formed in love.