It’s tough, but you gotta keep telling yourself to not let things get to you.
It’s weird because in my 20s I was pretty much zen like. It wasn’t until I hit my 30s I let shyt get to me. I’m pretty sure it’s because I just don’t care for people; I let the negatives of them affect me. Of course I know not everyone is the same, but little shyt like people littering irritates me. Even though I don’t get bothered by it much, it still makes me
Also, practicing gratitude helped me out. Just going out to look at the sky on a clear day makes me feel pretty good.