The issues arise when one "worries" about the target.
I'm a proponent of proper shooting form for the sake of consistent accuracy and physical health. That said:
We don't hear much about this but one of things that affects ones shot more than anything is attitude, mental-makeup, approach to things, etc. Some of us fret, have wandering minds, have laser mental focus, are too self-critical, etc.
I've seen young people shoot lights out with seemingly effortless ease who are happy go lucky, joke around, and don't seem to care...but they do. I've seen young people (and adults) who are what I call "accountant types" who can block out everyone and everything around them who shoot fantastic (a multiple Olympic medalist from 40 years ago comes to mind). It's the person who shoots a wayward arrow and then chastises themselves, kicks the dirt, looks around for "help" that seems to only get increasingly poorer results.
I remember watching video of the Rio Olympic archery event. Notice some of the shooters and the flow of their shot. It was uncanny but you could see when a particular archer took a fraction longer to release than was their norm, their shot was well out of the bull. I'm betting those folks were aiming, then moved on to the end of their shot but wrongly returned to rethink aiming before they released.
I'd bet that even the most form conscious (I tend to be one of these) can remember times when a shot (especially on game) has been taken and they can barely remember anything about the shot. They just went on auto-pilot and next thing you know the animal is tagged. In fact, it seems most of my hunting shots have been like that.