One of the earliest and most important things I’ve learned (and often forget) from martial arts is that even if we block the first attack, we’ll still get hit if we don’t move out of the way. This principle is true when dealing with the excessive negativity of others; maybe we’ll be able to counter a few negative comments with some positive ones, but if we don’t make it a point to move on from either the conversation or person, the unrelenting attacks will start to damage us.
The only way someone can make us stand there and take an emotional beating is if we are convinced by guilt to deserve it. No one is truly qualified to be the judge of another person, and are fully responsible for only ourselves. As Eleanor Roosevelt once said:
No one can make you feel inferior without your consent.”
Redeem yourself if you fucked up, but don’t just submit. Get moving.