They alone live whose lives are in the whole universe, and the more we concentrate our lives on limited things, the faster we go towards death. Those moments alone we live when our lives are in the universe, in others; and living this little life is death, simply death, and that is why the fear of death comes.
I think the biggest, saddest thing that happens in our lives is that we just don't embrace the things that could make it better because they don't seem to make it better at any given moment or we can't decide how to get across the aisle to that person.