I saw a mantra a few years ago ..
Don't train till you get it right - Train till you can't get it wrong !
Edit .. One item that is not trained enough and I am at fault with this also is we don't train enough doing reloads and practicing clearing a jammed slide .... I asked someone if they did and their reply was not often and when I asked why his reply was that he didn't want to get is magazines dinged up or the chance of dirt getting in/on them and then them not working properly .. and on the jammed slid his reply was he never thought of doing it ..
I plan on changing that in this new year .. by practicing mag changes during both my dry fire and live fire practice !!
A good training video on the subject