J.R. Miller emphasizes that every young person should embrace Christianity, as it fulfills the deepest longings of the heart. He explains that beginning a Christian life involves committing oneself to Christ, accepting His love, and establishing a relationship with Him as Savior and Master. Miller highlights the importance of love for Christ as the foundation of obedience and service, urging young people to act on their faith without delay. He encourages them to live out their Christian life with love and kindness towards others, reflecting the character of Christ. Ultimately, Miller advocates for starting this journey early in life, as it allows for growth and learning in faith.