A.W. Tozer emphasizes the importance of focusing on the future and the positive aspects of spiritual life rather than dwelling on past sins and failures. He compares the Christian journey to a race, where looking back hinders progress, and encourages believers to concentrate on what they are becoming in Christ. Tozer asserts that while it is natural to remember past struggles, it should only be a fleeting glance, as the ultimate goal is to look forward to God's glory. He warns against allowing past experiences to define one's present and urges Christians to use their restored health and strength for meaningful contributions to the world.