It took me a while to figure out Disappointed Dad people—people who automatically respond to someone else's success or improvement or good news with some kind of tear down.
At first I was like that kid, wanting to do better because obviously, I wasn't doing a good enough job and that's why I wasn't getting a good response. But I finally figured out it wasn't about me, so now when it happens, I just think "Disappointed Dad is Disappointed," like some kind of sad LOL Cat mantra.
But it makes me see the humor in it and take it less seriously. And every time it happens, it reminds me how I want to respond to others—to be positive back, because seriously, being Disappointed Dad is super lame.