Albert J. Bernstein

While you're taking your minute to think, consider the possible outcomes. Immediately discard any that involve making the Bully back down and admit that you're right. You cannot be right and effective at the same time.

To be psychologically healthy, we have to believe that what we do has some effect on what happens to us. Even if the perception of control is delusional, it usually leads to more productive action than believing that what we do makes no difference.