It's admittedly a 12 year old YouTube, but I always liked watching this when I was feeling especially cynical about the overall trajectory of the world: https://www.youtube.com/watch?v=jbkSRLYSojo
Before clicking that link I wondered what I would recommend to people who were feeling cynical about the world. It's a book by Hans Rosling - Factfulness, and it turns out that's the guy in your video.