Dreaming about helping someone tighten their seatbelt can symbolize your desire to take control or ensure safety in a situation. Seatbelts represent security and protection, so your actions in the dream might reflect your instincts to safeguard yourself or someone else in your waking life.
This dream could also suggest you are in a supportive role, helping others feel secure as they navigate their own journeys. Consider reflecting on your current relationships or situations where you might be providing support or guidance.
If you felt positive emotions during the dream, it may indicate fulfillment in being there for someone. Conversely, if you felt anxious or uneasy, it might suggest a concern about the safety or well-being of yourself or others in your life. Think about what areas in your life might require more attention or care.