It's a very good blog - albeit getting a bit too much 'commercialized' in the last years. The guy also wrote a book, which I found pretty good: https://fs.blog/clear/
That being said, you can read all this stuff, but more importantly - you need to apply it. This is the hard part.
80% of sales come from 20% of the customers > yes, fire the customers who bring in 80% of the work.
80% of goals come from 20% of the players > no, your formation should not change everyone to forwards
Opportunities come 80% from networking, 20% from working hard > if you spend all your time networking, people would avoid you
Very often there's a support structure in place which leads to to the results.
I understand the resistance of developers to such frameworks. Maybe Scrum misuse killed all enthusiasm.
Both inside and outside of work: 5 whys is good.
Think of 1 and 2 way doors. If the decision is reversible it is almost an experiment. Travel for 4 weeks or 12 weeks? Doesn't matter as you can fly home at any point.
Even buying a house is fairly reversible although selling immediately will be costly.
Having children is a one way door. Having dogs or cats is really too (or should be considered as)
Quitting a job may be 1 or 2 way. If you are high level at Google it may be impossible to get back to something like that soon. If you have a regular web dev job you can probably get something like that again if you decide to take time to do something else.
Sorry to disappoint but quality of your decisions grow only proportional to your expertise in some area.
There are adjacent and similar areas, so by getting better at one you improve your decision making in others as well.
But any book that tries to sell you generic “decision making” skill is a piece of garbage.
This is how skills work fundamentally.
Meta-skills cannot be learned, can’t be trained. This is why they are meta