IQ is misunderstood by most people and the common misconceptions are extremely harmful. In reality IQ matters much less than people think. The top 5 rated chess player of all time (Hikaru Nakamura) has a ~105 IQ. People with an average IQ are capable of performing at the 0.1% level with the proper structured training and time. In my experience IQ mostly impacts the rate at which you learn things. So it took you 2 yea…
IQ matters less than people think at some things, like chess. However, it does matter for other things, like mathematical analysis. Moreover, there is a correlation between IQ or proxies of IQ (like test scores) and income. While it isn't a super-strong relationship, there are few other variables that have as strong an impact.
And like I said, it's pretty hard to deny IQ is a proxy for learning rate (which is extremely beneficial practically). But it is not the deciding factor in human potential.
There are much more impactful and practically easy improve environmental factors like culture, school system, diet, parenting that are a much more fruitful place to focus our effort.