[Mimmy]

Having had a few years of intensive, classical-trained piano lessons at a young age, the notion of "deliberate practice" has also just meant "practice" to me: break down what you're learning into its separate parts, figure out which part you're weakest at, try to further isolate that specific thing into its own exercise, then do it slowly, gradually increase the pace, gradually re-incorporate the aspects you removed, play that part with the preceding music, play that part with the postceding music, play it without the sheet music, etc. Each step should feel uncomfortable at first, and once you get comfortable with it you move on to the next step until you can play it perfectly without any thought.

Kahneman has already touched on this, but obviously not all skills are predisposed to this type of practice. IIRC, this method of learning is useful for skills with shorter feedback loops (e.g. music, dance, gymnastics, some aspects of sports, etc.) and neutral to practically useless for skills with longer feedback loops or that can't be clearly broken down into its constituent parts (e.g. investing, science, entrepreneurship & innovation, etc.)

I wish all skills could be learned this way—it's the method of learning I'm most comfortable with. But of course, life is not always so easy.

[CuriouslyC]

IMO, those things you listed where deliberate practice doesn't work aren't technical, nor really "skills" so much as acquired "wisdom"