Have everyone open chapter 10 to Invitations and read the three bold headings silently. Ask each youth to choose one (treat your body and others' bodies with respect, do things that strengthen your body, or keep sex and sexual feelings sacred) and quietly decide one specific thing they will do this week to live it. Invite a few to share if they want to; no one has to.
The chapter promises that living the law of chastity brings God's approval and personal spiritual power, and that your confidence will grow as you live as a disciple of Jesus Christ.
Your witness: Think of a time when caring for your body, or choosing a higher standard than people around you, brought you closer to the Spirit or to Jesus Christ. Share briefly what you learned and how He was your strength, and remind the class that the Savior's help is for everyone, including anyone who has struggled.