Positive or negative, or even verbal encouragement on the course while you’re shooting… none of it is good or will improve your performance. This is why the frustration occurs.
What you’re doing or how you’re doing it, albeit well-intended, will not work, which means you have proven it with your approach so far. You must change the approach.
You must become totally committed to how and where the shot you’re about to take will come together – both in practice, and on game day. Very detailed. But you’ve got to be committed to doing it like you planned, as opposed to committed to saying you’re going to do it one way, and then throwing the plan out the window and trying to get the lead right and break the target at the end.
Number two, you must train an immediate post-shot routine to instantly replay what just occurred. If it was successful, it can be repeated, and if not, it can be corrected. But you are prohibited to pull the trigger if the speed is not matched.
