Ask HN: How to Improve Typing Accuracy

I have been using a keyboard for a long time, but I struggle to type accurately. I am more a 'touch-typer' than a 'hunt-and-pecker' but my accuracy is poor. There are two particular times when I find this frustrating. I work on the command line quite a bit, and invariably I will make a mistake and the command doesn't work. Correct it, but make another mistake. Again it doesn't work. I could slow down, and that helps, but at times it is frustrating. Also, it makes using slack/irc/etc frustrating because most of the time my sentences contain some mistake that makes me sound like I am struggling with the language when I am a native speaker!

I know that it sounds like a should simple do more touch typing practice, and maybe that is the answer, but the problem is that when I do exercises online I actually have pretty good accuracy. That includes typing practice in code and not just English. I am hoping that some of you might have suggestions or ideas that I have not thought of.

(you have no idea how many times I hit backspace while writing this!)