My method:
1. Before the swing, determine exactly where in the 'ding line' area you want to 'pull the trigger'. This may or may not be the ding line itself - if there is any significant crosswind I like to miss the ding on the side the wind is blowing from
2. Make the back-swing (apply meter power) ...
3. At start of downswing, follow meter with eyes briefly to see if it's moving smoothly; if not, TAKE YOUR HAND OFF OFF THE MOUSE and let it be a practice swing ...
4. If meter movement is smooth, quickly move your visual focus to the point you want to click ...
5, With that desired click-point at the center, of your visual focus, 'relax' your gaze and, when the moving meter comes into view from the left, start your clicking motion and accelerate into it to finish the click as the meter hits that desired spot.
I call it meter zen.
Side note: use only positive mental cues, never negative ones. Think about what what you want to do, never about what you don't want to do. Never think 'Don't be late!', as your mind will retain only the 'be late' part, and 90% of time you'll get just that result. Better mental cue: 'Be a bit early!'