Carl Sagan’s famous “Pale Blue Dot” speech, from his book of the same name, are possibly among the most profound words ever strung together at once. This animation of it, by Adam Winnik, is literally my favorite thing on the internet. Sagan was an astronomer best known for his TV show Cosmos (which is about to be resurrected by Seth McFarlane and Neil deGrasse Tyson). He sadly died back in 1996, before I had even heard of him.
I saw this video a couple years back when it was first made, during a particularly rough mid-twenties-existential-crisis, and it managed to pull me out of it. The speech — about the insignificance of mankind in the grand scheme of things, and the silliness of how badly we treat people considering — should be watched and taken to heart by everyone. Hopefully it makes as much of a difference for you as it did for me.