There have been many different definitions of lean over the years. The best one we have found is:
Respect for people and resources
Everything starts with respect, and we must take care of our people first. Only on that foundation can we get buy-in to run operationally remarkable projects in a stable environment. And only in a stable environment with standards can anything be improved. It is a sequence in the order of priority. We have created the graphic below to help you along your lean journey to eliminating waste and variation.