I also strongly recommend TsviBT’s please don’t throw your mind away, since prioritizing the state of being “on a roll” and genuinely having a good time looks like a really tractable way to boost brainpower to a large degree, even if it only works on a somewhat predetermined range of topics for each person.
I’m thirding Tuning Your Cognitive Strategies.
I also strongly recommend TsviBT’s please don’t throw your mind away, since prioritizing the state of being “on a roll” and genuinely having a good time looks like a really tractable way to boost brainpower to a large degree, even if it only works on a somewhat predetermined range of topics for each person.