What if?

Just re-watched Khuntoria's last episode. I never fail to tear whenever I watch WGM's last episode or those touching scenes. While watching, I was wondering, what if we had the chance to know our last day? What would we do? What if I knew that day was coming, will I be able to end it with smiles? What I could have done to make us smile? How will I do it so that we won't regret? It's just like knowing that the world will really end at that date that time. If we had to plan for that, how different it will be right now? I have no idea either.