Focus on how people spend this specific day (e.g., Midnight Mass, specific family dinners, opening one gift early).
Reflect on how these rituals connect us to the past and to those no longer with us.
End with a sentiment about finding peace in the "eve" of any major life moment. If this isn't what you were looking for, could you tell me: What is the specific topic of the essay? How long does it need to be? What is the tone? (Academic, personal, professional?)