A touchy subject this, but unfortunately there are many key things about being successful in business that you won't learn in Business School. One of the worst omissions in my view is that of the power of small changes and how these compound to make big improvements to business over remarkably short timescales. One such idea is the one I call my magic profit spell, which shows you how to take specific components of any business and make them unrecognisably better by changing things almost imperceptibly.
