Masters of Merit / Practice That Changes You

You cannot see your own errors, which is why feedback is not optional

The faults that limit a person are precisely the ones invisible from the inside.

Self correction has a hard ceiling. A person can only fix what they can detect, and the faults that hold a skill back are usually the ones that have become part of how the work feels normal. The grip that is fractionally wrong feels correct because it has felt that way for years. The habit of rushing a particular transition is inaudible from inside the performance. These are not subtle to an observer. They are simply unavailable to the person doing them, and no amount of concentration retrieves them, because the fault is in the perception as much as the execution.

This is what makes an outside eye structural rather than optional. It does not have to be a teacher in a formal sense. It can be anyone whose perception in the relevant area is better than yours and who will say what they actually see. Recording the work and reviewing it later helps a little, since it separates the doing from the judging, but a recording only shows what you already know how to notice. Someone with better perception tells you what to look for, and once you can see it, you can begin to work on it alone.

Getting useful feedback requires asking a narrow question. Broad questions produce reassurance, which is worthless. A specific question about one element, asked of someone competent to answer it, produces something that can be acted on this week. It also requires being able to hear an answer that contradicts your sense of the work, which is genuinely difficult, and is the reason a lot of people arrange their practice so that no such answer can reach them.