I see things pretty much as diagrammed except in 3D. The shooting part is down the stick centered but that's separate and too much text anyway. I use aerial marks (like DD's peace sign and other gestures) which allow me to do the visualization for many shots from behind the cue ball. For instance you can nail the tangent line using the edge of your hand right in front of your face. you can move it around to check all kinds of stuff no foul.
In short, I've done a lot to calibrate my PSR to the geometry. Generally I consider the stick itself a component of the shot and getting "chambered and locked in" is very high priority.
To answer the question of the original post, I would say not really once you become an adult you’re free to try to become a lawyer doctor Pool, player or whatever you want.
