That website is bullshit frob. Might as well read lifehack or something than read that.
Seriously. He actually has an article where he strongly endorses the "Law of Attraction". Sweet zombie jesus.
We're talking about the guy who keeps getting articles published on this very site, right? Like, say, this one? I have to admit I'm a bit confused as to why so many people take him seriously. Most of the time he's "not even wrong," just spouting stuff that's abundantly obvious. The article I linked has this gem in it:
For example, I’ve written 700+ articles, so I’m pretty good at estimating how long an average article will take to write (3 hours is typical).
I mean, there's not even a pretense that he's actually putting a lot of thought into these articles; he's just spouting as much stuff as he can as quickly as possible.
I was also confused by the positive response to this article. It's obviously too short to have any actual content, and yet people keep praising it for telling "the hard truth" or some nonsense, seemingly without realizing that it's actually just the same hollow, feel-good "you can do it!" drivel, devoid of any specific advice and disguised with some "bluntness" and more than a bit of self-promotion. This does not, of course, change the fact that it's immensely satisfying (and useful) to be genuinely good at a lot of different things, but there are roughly billions of people out there just as qualified to point that out, and most of them don't even feel the need to spend the first sentence of their interaction with me letting me know that they're "intelligent, self-directed people."
That's not to say that his advice doesn't work: if you're a smart person, you probably can turn into a rich person just by changing some of your habits. The fact is, though, that this requires taking time away from your real dreams and pursuits, be they artistic, intellectual, or whatever. If what you really want out of life is to get more money and and do less work than everyone else, then by all means, do this kind of stuff.
For me, at least at this point in my life, the fact that he stopped being a game developer is enough to tell me that following his path will lead me away from where I want to be. I mean, maybe some day I'll give up trying to make stuff that people, you know, actually like, but for now I'm happy to run far, far away.