(in that it will help people make the shift away from a fixed mindset, which is absolutely essential for real progress)

I agree that this is really important.

Many of the more useful recent changes in my life were the result of the idea that I can look at what's going wrong, and actually do something to try and change it (and see if that works, and keep trying and refining) more than any particular single piece of advice.

There was also some impact from different thinking habits (dissolving the question, avoiding generalizing from one example, thinking of goals and then solutions, etc.) which have definitely been widely helpful in my life, but rather than delivering a few large chunks of utility, they gave a bunch of really small ones.