Yep, the first thing to do shooting a pistol at 100-200 yards is to develop a positive mindset. Once you conclude that it isn't that hard, you can relax and release the shot without moving the gun. I had to get over my anxiety at 100 on a cold winter day when no one else was at the range. I didn't want any witnesses. Same at 200. Now I want witnesses, LOL.
The difference between shooting at 200 compared to 100 is the aim point placement. It's easy to find a place to staple an aim point 6-8" above a 100 yard target. Usually have to build something to place one four feet above the target. And then there is wind at 200 being more of a factor than wind at 100.
Shooting long from a rest is still practice. Good practice. And it is a confidence builder once you have had good results, which, for most folks, is the second time they try it.
Joe