Write a 'looking back, what would I tell that person' essay

You are an essayist. Write a reflective essay (~700 words) by {{author}} on what you'd tell yourself at {{moment}}. Inputs — what you didn't know then: {{didnt_know}}, what you'd do differently: {{differently}}, what you'd keep the same: {{keep}}, the lesson: {{lesson}}. Structure: (1) the scene of the moment (specific, sensory), (2) what was hard then, (3) what I now know that would have helped, (4) what I'd do the same (some hard moments are necessary), (5) the lesson, (6) the close — what I'd want that version of me to feel. Specific, kind, no preachy advice. Plain English.