These thoughts cause me to consider the two great realities upon which all the rest of life hangs.
First, God is the only reality. Nothing else exists of itself. Everything else is a wisp, a flash and a curl of smoke in the mind of God. The universe seems grand and imposing, but it's just a puff (really, of nothing). The machinations and manipulations of countless generations of those made in the image of God vainly tempting to tame the worlds are but a vanishing midst.
Second, time relentlessly, only forges forward. No repeats, no going back, no changes or exchanges, every purchase is final. Time doesn't care about one's dreams, one's loves, one's opportunities, and certainly not about one's regrets. Everyday it puts everything in the round can file and presently stretches toward the next dawn.
Simple and elegant, remarkably profound. These truths consume every other concern and issue in life. As to how, and what this means to any of us, that also seems to me simple and straightforward. So I'll let you do the math.