This theme has one idea in it, and the idea is short. You will die. You are not dead today.
Most writing about death goes to the first half and stops. This one is written for the second half. Death is here as part of the scene, the way the horizon is part of a landscape, and its whole job is to give the day you are standing in its real size.
Look at what is around you right now with that in mind. Your health, if you have it today. The people you love, if any of them are within reach. A safe place, if you are in one. Enough to eat. Any one of these is the thing somebody else is praying for tonight, and most days we walk past all of them without a word, because they are the floor we stand on and nobody thanks a floor.
The universe helps here, if you let it. Living matter is a rounding error in it. Almost everything that exists is cold and empty and has never been alive at any point. And you are alive, this morning, breathing, drinking water, feeling something. Billions of people have lived and died and you still have your share of this.
The other direction works too. A human life is a fixed and quite small number of days. You have already spent many of them. Rather than counting what is left, count what has been had: the years you have been alive, the times you laughed, the food you have eaten, the health you are still in. Written down, the tally does not read as loss. It reads as an inventory of what you were given.
This theme also lives outside the writing session. It can catch you during the day, in the middle of something ordinary. You stand on a hill and remember you stood on this same hill years ago, and that all those years you have been alive and breathing. Write those moments down when they come. They are the theme working.
A simple way to start: write one sentence for today that begins "another day and I am alive", and then, underneath it, the evidence. What you saw, who was there, what you ate, what your body let you do. Tomorrow write the same idea in different words. It is the same idea every day on purpose. It is meant to wear a groove.