The template is simple: Write generic advice that sounds nice, and is never controversial. Make sure it's super vague so you don't have to take any accountability for it, you can move the goalposts of what you're saying.
If we remove all the filler in this article (more or less the entire article), it amounts to "be okay at multiple things rather than trying to be good at something".
As per usual with incredibly vague life advice from unaccomplished people, this isn't always a good idea to apply. Being excellent at something (or at least very good) has its merits. For example, I don't want someone who can write "Hello, World!" in 30 programming languages. I want someone who understands even just one programming language inside and out, and really puts the effort into improving.
> "Every Skill You Acquire Doubles Your Odds Of Success"
No it doesn't.
Bonus points if you have a modal that pops up to sucker you into a free mailing list in hopes of converting you to an over-priced life advice seminar / program / book.
There is no secret bullet to productivity, and paying $197 for this snake oil salesman's course (how long do you want to bet that "sale" has been going on for?) is not going to help you. Eat well. Sleep. Maintain relationships with people you care about. Work hard, pay attention to what you're doing and think critically. That's all there is to it.
> "Read over 500 books"
Someone bragging about the number of books they read is hilarious.
Congratulations on $1.2m in revenue and a business degree, but that doesn't make you worth listening to.