If there is only one thing we do today that has the biggest impact to our quality, cost and productivity, what would that be?
Would it be starting a My CI program?
Would it be a 5S program?
Would it be a six sigma projects?
Would we begin running regular kaizen events?
Would we hire or contract a Lean Sensei?
Although I agree that a great Lean Sensei is worth far more than their weight in gold, it is not the answer. The real answer is quite simple.
Follow Standard Work!
Every part, every process, every time.