It’s the thing I didn’t realize about getting older: life gets better. Nobody really knows why, but a lead theory is that the older you get, the better you are at letting stuff go. You know who you are, you know what you’re doing and who you care about, and you know what you don’t really have to worry about anymore. Psychologists and old people have known about life getting better for a while; a giant new phone survey confirmed it, and I wrote about it for ScienceNOW.