It’s fairly easy to point sights at a target. Keeping those sights from moving off target is less easy, but not particularly difficult. Pressing a trigger with three and a half to twelve pounds of force, without moving your gun at all, is an entirely different matter. That’s difficult to do, and it takes practice. If you have any hope at all of executing this skill while under a little bit of stress, as in a competition, or under a mountain of stress, when fighting for your life, you need to ingrain this skill into your subconscious. It has to become as natural an action as breathing or eating donuts.