Should we live like we're dying?

"Everyday, therefore, should be regulated as if it were the one that brings up the rear, the one that rounds out and completes our lives."
"The man who looks for the morrow without worrying over it knows a peaceful independence and a happiness beyond all others." -Seneca
In the Christian parlance of our day this attitude is often referred to as, "live like you're dying," popularized by a few songs. The problem is that nobody ever, ever actually lives like they're dying. Maybe one day here and there, but everyday for days on end? Nobody does that!

Nobody would go to work in their cubicle. Nobody would save money in the bank. Nobody would pay the mortgage. Instead, we'd simply spend our days being with the people we love and talking to the people we meet about the things that we care about, the things that we really believe in. We'd soak in the beauty around us, reveling in the feeling of pure existence.

Living everyday like you're dying may sound really good in songs, but that's not how things actually play out in real life.

At first blush, the first quote from Seneca appears more Epicurean, hedonic than stoic, but the rest of his letter qualifies the statement. Specifically, the second quotation above. That is stoic to the core--hoping tomorrow will come and be a most excellent day, but not worrying over whether or not it arrives.