To be the best at anything, means that you must live abnormally and do abnormal things. This is why being the best at everything is nearly impossible, since each thing to master would require different kinds of abnormalities and different ways of living abnormally.

This is why you find "geniuses" in a particular field, like math, or music, and they're usually not-so-genius in most other fields. "Genius" is attainable in my book, it's a matter of being focused and "putting your mind to it" as the article states, and this focus and "putting your mind to it" require being and doing abnormal things.