Saying that all problems is due to psychological ones seems to me as an excuse for lacking vision of concrete path to improve oneself. Staying in abstraction, opinions and fuziness allow to discuss endlessly about one's problem but doesn't help to find a solution. Deming said that you can make all the effort you want from inside and that it is at the end useless because the knowledge comes from outside of you. So you must acquire knowledge because it can't be found inside you - so that he opposed many psy gurus he also encountered in Management of Industries when he was consultant since he is dead since a few years. He means you must study variation concepts in DETAILS and not content with generalities on noise or psychology although he deals much with psychology too but he advocates concrete paths and knowledge and not only placebo effects like pure psy gurus.

