>when do you let go
Never. Never. Never.
Never let go. My grandfather was strong until his mind left him and he forgot how to live. My father is strong to this day and maintains his health even more now that he is retired.
I will be strong when I am old.

You die when you let go. Some men die at 22 when they are married. Some men die at 50 when they retire. Some men never die, they must be killed.
I will be a man whom life must strike down with pestilence or war for I shall never die.