It may sound a little silly but when I get good feedback on something, I pop it in my journal under a specific tag so I can revisit it from time to time.
It’s unfortunate that people are unfair to you, possibly they are younger or otherwise have incorrect expectations about your fallibility as a human.
I used to respond to things like that but these days I let the positive comments speak for themselves. Just remember to ask for feedback- a lot of people otherwise won’t do it unless they’ve got something negative to say.