I'm working on this, though i usually say - I'd rather get bitched at for doing it wrong than for not doing it. At my job it's to emphasize the stupidity of the task and the lack of training on a shitty system.
as a swiss german (we capitalize nouns for those who don't know), I sometimes automatically capitalize nouns when writing in english, especially when I just wrote something in german. Its a habit and at least for me, its really hard to prevent me doing it.
Same is for when I wrote mucn in english before, then writing something in german. Then everything is in lowercase.
All I can say is that things can turn it better, it has for me personally.
It's great of you that you inspire others, though, not hypocritical, it's what we all need sometimes. Doesn't matter if you don't see it personally, you are helping another human being get along.
It's not a problem if it takes you 12 tries and you still haven't gotten it, do it a 13th. If I don't do something perfect on the 1st or 2nd try I'll most likely never do it again.
I get the opposite problem. If I get things nearly perfect on the first try, I'll just think to myself that I'll never top that and give up. There's something satisfying about seeing improvement. In the same vein, seeing results get worse is highly discouraging.