This volume is the sequel and practical application of Regeneration, the Gate of Heaven. It contains complete instructions in how to conserve vitality in waking hours, how to conserve vitality in sleep, stoicism, what the times of danger are, necessary hygienic habits, unseen helpers and opponents, hypnotism and its resources for self-conquest, special advice for the young, the old, women and the different temperaments, modesty, and practical development.