Never the Same Shot Twice
Why this drill
The course never asks for the same shot twice, and a bucket of identical 7-irons quietly trains a skill golf does not test. Changing club and target on every single ball feels worse and works better — the block-versus-random finding is the best-documented result in practice science.
Setup
Your full bag beside the mat, fifteen to twenty balls, and at least three targets at different distances.
The drill
Every ball: new club, new target, full routine from behind the ball. A wedge to the near flag, then driver down the imaginary fairway, then 6-iron to the far green — never the same club twice in a row, never the same target twice in a row. Score each ball hit/miss against the target you called, out of fifteen. Expect your strike to feel scratchier than block practice; that discomfort is the drill working. Nine or better out of fifteen is a strong day.
One thought to take with you
Treat every ball like the only one you get — because on the course it is.