Ansel Adams (click the link to get a Google search, then click the Images link on that page) was a legendary American photographer of the mid-20th century. His breathtaking landscape photographs set standards that few have met and none exceeded. He was a virtuoso artist whose medium was the photograph. Behind the beauty of every photograph he released, though, was a master of the photographic craft.
Most of the dramatic prints he made were photographs of fairly mundane scenes. But Adams knew, before he pressed the shutter, that if he gave this much exposure to the scene on this kind of film, and developed the film with this kind of developer, and printed it on this kind of paper using this kind of print developer, and by manipulating the heck out of the negative while he made the print, he would produce a masterwork.
Because he had mastered the technical side of photography, he could concentrate on the art of photography: choosing just the right the subject and framing the shot just right.
Golf is the same way. If you have done your homework on the range, you will know in any given situation which club to use, and which setup and swing variables to select in order to hit just the right shot for the situation you're in.
For example, consider the short pitches from 25 to 60 yards. The main course variables are the distance from your ball to the edge of the green, and from the edge to the pin.
If you have truly learned how to hit these shots, then for any combination of these two distances, you will know without thinking which club to use, and which setup and swing variables to tack on. Then you can concentrate on the feel of the situation and have the clear mind necessary to pull off all that technique.
When you're trying to figure out the technique for the shot at the same time you're trying to keep your mind focused, you won't be able to accomplish either one.
A few years ago I saw Retief Goosen on TV hitting from about seventy yards to the right of the green, in front of the one on the neighboring fairway. He had little green to work with, and the shot was blind because he had to hit over a cluster of trees. He flew the trees and stopped the ball inside six feet from the pin.
Don't tell me that was lucky. He knew from his practice exactly how to hit that shot.
The more technical shot-making skills you can develop on the practice ground, the easier this game gets and the better you will play.