It helps to switch back & forth from live firing to dry trigger presses while at the range. Also, for revolvers load 3 or 4 rounds and close the cylinder without lining it up in any special way, for semi's load several mags with varying numbers of rounds & don't look at how many are in the one you are inserting. Not knowing when you're going to get a click instead of a bang (& look real foolish flinching) helps a lot in that department.
When Banjos are outlawed, only Outlaws will have Banjos
The Bible is my lawbook. I turn the other cheek when applicable, and spend the rest of my days resisting evil at every front, until I have breathed my last breath.