Training of any sort is a real challenge. At its core you are trying to change behaviour, and for many that is a difficult thing. Years of habitual behaviour is a big wall to break down in a way that still leaves the desired elements in tact, while allowing you to build something new. For most of us, even when we want to change, it requires not only time, a fleeting resource for all, but a great deal of effort. The real effort is not in learning something new, but the need to repeat and practice the learned behaviour over and over till it becomes “the new habit”. Everyone is familiar with the rule of thumb that it takes 21 days and constant repetition to develop a habit, the older we get it is likely even more. Consider that most business people are already trying to pack 16 hours into a 10-hour day, and “practice” of new skills or habits usually falls to the bottom, or off the list.