"If you died tomorrow, would you want to tell anyone anything?"
I'd want to tell my son to stay strong and that even though I'm not physically here, I will always be with him. I'd tell him to look up to the night sky and pick a star, and say, that's where I will be. Always shining down on you, every night, guarding you while you sleep, giving you good dreams, and loving you always. I'd tell him that he is loved so much, and by so many, and will always be taken care of. I'd tell him that I am glad it's me and not him, because I couldn't bear to live in a world where he did not exist.
And then I'd say, I love you more than anything, ever.