Just one more habit to add to their devotion times. Start them on their journey of personal prayer time. Help them pick one person each week to pray for. A sibling, an unsaved family member, a world leader. Teach them to pray for their own spiritual growth. Teach them to express their THANKFULNESS to the Lord. However you want to start this, help them to grasp the importance of building a prayer life. One step at a time, help equip them in their relationship with the Lord.