Even when we have what we want, we still can't land in this moment. We cling to the illusion that there are indeed a set of circumstances that, once we achieve them, will finally, miraculously make this moment inhabitable.
I don't remember who first told me life is short, but it obviously made an impression. Maybe my grandmother, who guessed I didn't think I'd ever be as old as her -- and she was younger than I am now when she told me. Remembering that has made all the difference.