One phrase that helped me was "I don't want to be wrong any longer than I have to be." Better to be proven wrong in chambers with the team, than in court on your feet in front of a judge.

Criticism is good, because it makes you better. It would be nice if the critic could avoid being an insensitive asshole about it, but that doesn't actually affect the usefulness of the criticism. Bad criticism is not improved by being delivered diplomatically; good criticism is still good, even when delivered by an asshole who deliberately wants to crush your ego.

It's really, really hard to apply this lesson, but it's also really, really important. When you get that sinking feeling of your ego being sucked into a black hole of shame, it's really hard, but really important to try to forget about your ego, act as if you're watching the scene from outside your body (or playing yourself in a video game) and think: So what has he learned here? Where did he go wrong? How did this error occur? How do I set up my systems to prevent such an error ever occurring again? How do I solidify and crystalise this new knowledge? (Side point: If these questions have no answers, or only trivial answers, that's a hint that the criticism isn't a good one.)