Sometimes prayer is arguing with God about life's mysteries. Prayer is interceding on behalf of others near and far, high and low, rich and poor, weak and strong. Prayer is meditating on the working of God in history, the greatness of God in nature, the goodness of God in his providences and the promises of God in Scripture. Prayer is being totally honest with yourself in the presence of God. Prayer is recovering from the brink of despair, the depth of failure, the isolation of loneliness.
Prayer is intensive care in acute suffering and sickness.
Prayer is refining our dreams about the future in the light of the will of God. Prayer is waiting on God when he is long in coming. Prayer is the cry for justice when it does not come. Prayer is walking with God all day and every day.