I totally agree with this when it comes to outliers, but this is focusing on the extremes, right? On either end there is a manic drive, or lack thereof, that separates dysfunction from world-class performers.

Then you have the vast majority of people who are somewhere in between...

These people see significant improvements from modest exercise, tailored diet, consistent sleep -- better energy, self-esteem, body composition, general health indicators. They don't need to qualify for the Crossfit Games to see results. They don't need anything near the focus or drive of Michael Jordan.

The same goes for education or business. They don't need to have the single-mindedness of Steve Jobs to be successful. In fact, they don't need anything near that.

Most people I've met, even adults I've taught to read or do basic math, have something in their life that they take more seriously than most people -- something that they work at, or study, or take pride in. It's their personal foundation. It might be modest compared to other people, but it's solid nonetheless. That's where they build from.

Along these lines, one person may have zero drive for physical fitness but overcompensates for it with their passion for small engine repair.

I've often had the experience of thinking someone is lazy in the workplace, only to discover they are gifted with building community outside of work.

I just haven't met very many people who are completely dysfunctional, short of mental illness. In fact, the genetics theory tends toward an elitism makes me uncomfortable. It might explain outliers of motivation, but that's about it, in my opinion.

That said, I've met a lot of people who are conditioned to believe they are a victim of circumstances -- wealthy, poor, and in-between. Nothing to do with genes. Lots to do with other kinds of privilege.