A Memory I Can't Place

I have a memory of a dying person, writing to a friend, or a lover, saying that soon they would be together, and then they would have a good time.  But it never happens.

Where did I read this?  When did I read this?  It seems like a well- known situation that everyone knew ...

I give up. 

Kay

P.S.  I suddenly recalled where I heard those words!

It is from James Taylor's  'You can close your eyes.'  The second verse goes:

Won't be long before it's another day

We're gonna have a good time, 

No one's gonna take that time away from you

You can stay as long as you like

 

I think I confused the order of the words.