The moment is ingrained in my mind as clear as day. My colleagues and I were hired to run an unconscious bias training at a law firm. As we were planning and rehearsing the training, I misgendered a trans-male colleague by addressing him with the pronoun her. I remember tripping over my next few words and, as the conversation moved on, it weighed down heavier on me each second. During a break, I called him to the side of the room and apologized profusely. He said it was fine, and then, ironically, we went back to rehearsing our presentation on unconscious bias training.