Your family will look at you funny. It's painfully boring at first, but the results are just too pleasureable.
Here is what happened to me when I forst started doing these drills. I felt clueless because I had so much movement to begin with I couldn't form a mental picture of what breaking the trigger with no jerk, flinch, blink, position break would look like. I got down in the prone position and shot from a very stable position and then just did a copy and paste to my standing practice. I firmly believe that if you can't see it in your head you can't do it with your body and I also believe that doing it in your head improves what you do with your body. Memorize your sequence.
Address the target
Shoulder the rifle
Play with your body position to compensate for the extra weight in front of your chest. You are going to have to experiment but you will find it pretty quickly. Hold your position for 1 minute just to see if you start to sway. A shoe with no heel and very flat sole like the ones the skateboarders wear will help. Western boots won't.
Address the target
Locate butt on shoulder
Lower muzzle squeezing lead elbow inward and compensating for the weight or the rifle
Looking over my rear sight lining it up with the front sight and target
as the lead elbow begins to rest against my body
Bring my eye to the rear sight and find my sight picture to discover where I am.
Adjust vertical or hoirizontal
Close eyes
Breathe 3 times in and out
open eyes check sight picture
Adjust vertical or horizontal
close eyes
When your NPA is in the 10 or x ring your movement will be reduced greatly and you will soon find that there will be what I call a quiet zone where for a second or two you seemingly quit moving. That's when you try to break your shot.
Now when I start actually pulling the trigger in dry fire the one thing I add to the previous other than the obvious squeeze on the trigger, is I am striving to have my eyes feel dry. If I blink my eye is lubricated. "Don't blink" didn't work as well for me as "dry eye."
So, put the process in your words in your mind. Play around with it and it becomes automatic. When you are under stress having the checklist is pretty nice.