One trend I've noticed is that coworkers who know better have started slipping back into calling me "he" or "him". Many of these people have offices in the immediate area of my office, and we interact daily. They don't ever seem to realize they are doing it. Rather, they are reacting to my normal voice, which is in the lower range of voices. I believe it to be a subconscious thing, with no malice behind it, because I work with a group of pretty good people.
Sometimes I say something to them because I genuinely dislike being misgendered. When I say something, the person I mentioned it to is always apologetic and clearly tries to do better. Honestly, they are always startled that they had done it.
Sometimes I get down on myself for not doing better at using the techniques I have learned in voice therapy that allow me to raise the pitch of my voice. It is possible to do, but honestly, it takes a lot of concentration to maintain that higher pitch, and in longer conversations, it hasn't seemed worth it.
Then, when I get down on myself for not doing better, I get down on myself for getting down on myself, because I shouldn't have to do better.
Sometimes I don't say anything to them, but rather, simply cringe just a bit inside. Sometimes I worry that I will be perceived as being difficult if I make too many corrections. I don't want to be the person people tread carefully around when they speak to me, if that makes sense.
Gender is such an awkward thing to navigate when all the slots on the slot machine don't line up. There is unrealized privilege for those whose slots line up; a jackpot of sorts, wherein they don't have to navigate the dissonance and the fallout of that dissonance. I say it is unrealized because when things always make sense to someone, that is so unremarkable to them as to not be noticed. Thus, they find it difficult to understand those whose slot machine is a little different, and they respond without thinking as though no one experiences dissonance.
We see this all the time when a group of friends or coworkers are walking somewhere, and one of them has just a bit of a mobility issue. Everyone walks happily along, while the one friend slowly fades back a bit, because they simply cannot move as fast. Eventually, the friends notice and stop to wait for their friend to catch up. They apologize, and start off again, albeit a bit more slowly. Yet, within moments, they are proceeding at their precious pace without even realizing it. Does the person with the mobility difficulty keep saying something? Do they struggle along in silence?
In the same way, people react to the gender they perceive through the fog of their own lens, rather than the actual gender of the person. It'd just be nice for it to happen a little less at work.