I need to write a good bye letter because I'm dying

Whatever you write is very, very personal.
I think I'd write one for each person.
I love you, I'm glad I know and love you, I'm not going to say goodbye. I can't think of more. We live, we love, we die. That summer we all went to the ocean? The day a baby was born? You could recall all those for what would fill a book. It doesn't matter.
We live on in them. They are part of us, and we are part of them.
Nothing is really lost. No need to say goodbye.