Something I’ve noticed is that the more you create, the more impermeable you become to destructive criticism. Building up a body of work gives you the opportunity to judge your own work against your own standards, before anybody else need have a say.
When you do get criticism, having a track record means you can cherry-pick the constructive criticisms, but disregard the sniping, jealousy or self-opinionated critics with a hidden agenda. You begin to ask “what would they know?” In fact, “how would they know?” becomes an entirely fair question.
I think Richard Carpenter said it best when describing criticism of the music of The Carpenters: “you might not like what we did, but you can’t say it wasn’t good“.
So keep doing what you’re doing until you’re sure of it. That’s a position of strength.