If you have ever taken any kind of martial arts you should know exactly what it is, if you haven't, just try and remember the first time you tried to do anything athletic, the more you did it the better you got because once the brain and body become one with what you want to accomplish it happens almost automatically.
Blank or blind bale shooting is what accomplishes this the fastest and best way, and if you start to have a form problem it's what fixes it also. Remember you can't think of doing two things at the same time ( multi task ), you might think you can, but all you are doing is thinking of one thing at a time very quickly.
Bale shooting takes care of this because once it is ingrained, your body does it by habit rather than you having to think about it, and all you have to do is think about one thing, that tiny spot you want to hit.