Intercession lends itself to what I call "praying in the cracks." We can pray for others at any time or any place. There is no need for books or special postures or even words. intercession is a natural kind of prayer for the insomniac or the light sleeper. The closing collect of Compline in hte Book of Common Prayer, attributed to Augustine, offers structure:

Keep watch, dear Lord, with those who work, or watch, or weep this night, and give your angels charge over those who sleep. Tend the sick, Lord Christ; give rest to the weary, bless the dying, soothe the suffering, pity the afflicted, shield the joyous; and all for your love's sake.

This is a prayer to be prayed for taxi drivers, who wonder if their next fare will beat and rob them on the lonely street; for subway crews driving nearly empty trains far underground; for emergency room staffs and rescue squads; for the bakers making tomorrow's bagels and journalists putting together the morning edition. It is a prayer for the grief-stricken widow, for the new parents kept awake by a squalling infant, for the man awaiting surgery in the morning. It is a prayer for the weary derelict sleeping on a sidewalk grating or leaning against a wall in the bus station. It is a prayer for the exhausted woman working a second or third job to make ends meet. We only need let our imaginations and hearts be open, and the empty night hours are no longer empty. Even in solitude we are knit together in community

Margaret Guenther, Toward Holy Ground