All that feels permanent about existence is temporary. It passes. Use whatever metaphor feels most like the land you love: traffic, river, food through your gullet. Tomorrow will not be today.
Yes. No stress.
You are not temporary. You are a thousand feet tall and made exclusively of light, made exclusively of massless particles that do not experience the passage of time (this is no metaphor).
Yes. And also yes.
Go deeply into any realm of thought and their best accumulated knowledge will suggest that you are bigger, that the world is bigger, that the universe, and beyond it is bigger, and bigger still.
Yes (here now today… live),
and also Yes.