I thought the "Plan Peaceably" principle on page 110 was really awesome and encouraging. It sometimes can be stressful to pick songs for a worship service and to want to have everything right and new and cool. God doesn't care about that though. As long as we plan prayerfully God will show us the songs that will make the difference in our worship service. We can worry and stress and change anything we want but ultimately God's songs will be used. I thought this chapter in general was very clear and helpful in giving principles for putting together a worship service. The ideas presented can take a lot of stress of of the planning.