Most of the golf instruction out there does everything but...
Most of the golf instruction out there does everything but establish consistency on the course. It would be as if I continued practicing my typing once a week, but each time I tried a new style. One week I would hold my fingers over the middle row of keys and bend my fingers at a 90 degree angle, then the next week move to the top row and only bend them 75 degrees, and the next week over the bottom row, etc. At that rate I'd get worse and never finish a Golf Improvement Weekly.