AI OVERVIEW: Rest, responsibility, restriction, and relationship are presented as four walls surrounding the heart, enabling someone to discern whether they are okay in any circumstance. Rest is not merely physical sleep; it is worshipful ceasing that remembers the finished work of Jesus and the sin that has been absorbed, allowing the soul to rest in God's completed salvation. Responsibility is the calling to meaningful work, viewing whatever is in hand as a gift and serving others, exemplified by Jesus washing his disciples' feet. Restriction is the healthy 'no' that shapes love and boundaries, while relationship emphasizes that not being alone is foundational, since humanity is formed for connection and community. The four walls together empower buoyancy even in storms.