Not to be morbid, but I watch this video at least once per year, if not more often. It reminds me of the unavoidable, inevitable context of my life: that it is temporary, that I am a phenomenon and not a thing, and that one day I will experience the end of myself.
I find the poem, and the gravelly, matter-of-fact delivery of the narrator, to be immensely comforting. It helps me to spend my time and energy wisely, and to remember what truly matters in life.
If you prefer your unflinching life perspective with a little more Shatner, try this.