R.A. Torrey emphasizes that the conditions for success in personal work and soul-saving begin with a personal, experiential knowledge of Jesus Christ as Savior. He outlines the necessity of a clean life, absolute surrender to God, and a deep realization of the lost condition of those outside of Christ. Love, perseverance, practical knowledge of the Bible, prayer, and the baptism with the Holy Spirit are also essential for effective soul-winning. Torrey stresses that true success in personal work comes from a heart transformed by Christ and a life dedicated to His service.