learning how to learn is more important than learning anything else. If you know how to learn, you'll reduce inertia and emotional investment in any particular niche, so you're likely to make better decisions when choosing what to best work on. Another consequence is that it's best to be continuously introspective with regard to what you're doing versus what you should be doing. Often that gives you unexpected insights. If you're a good calligrapher and grok the emergence of the printing press, the smart move is to be the first font designer.