If you're looking to improve your own critical thinking and decision-making skills and to apply them to solving problems, or if you just notice that everyone around you is being ridiculous and stupid in predictable ways and you want to be better than that, then "Rationality: From AI to Zombies" will be right up your alley.
Also, I would like to note that if everyone around you is being ridiculous and stupid in predictable ways without realizing it, then the cognitive mistakes they are making are likely common and easy to make, in which case you could very well also be making those same mistakes without realizing it.
After learning about how to improve my own sanity for the past couple years, I have become suspicious that maybe sanity is never an inborn attribute, but rather a skill or set of skills that some people have an easier time learning than others. At the very least, everyone is at least a little crazy unless they learn how not to be.
And lest anyone think that I am being condescending and saying that I am oh so sane and that you all are crazy idiots or something, I will point out how crazy and stupid I have been for the vast majority of my life, and how even now I'm still not perfectly sane.
It might not seem like it now, but I was functionally quite dumb as a kid. Not just in the sense of being immature or inexperienced, but rather I suspect that I may have had a genuine case of mild mental retardation. And even if I didn't, my psychological issues made me so functionally stupid and crazy that there was no practical difference. Whether the underlying mechanism for that was an undersized cerebral cortex or merely a bunch of maladaptive neural networks that were sucking up most of my cognitive energy or something else entirely... I don't know for sure.
Nevertheless, I was the problem child, the moron, the idiot. People only said I was smart because I had glasses, liked to read and actually made an effort in class. So when I talk about rationality and how most people are crazy unless they learn how not to be, and how I've been learning to be saner than most other people are, I mean no offense and would strongly prefer that you do not take it as an insult.
Also while we're on the subject of how human beings in general are at least a little crazy unless they learn how not to be, I wrote a poem about exactly that. Hope you like it!
Look! Out of the corner of your eye!
You just missed it
Look again! It’s right there!
You saw it, I know you did
Look! Why don’t you look?
You don’t believe me?
You don’t believe your own eyes, either
You ignore it
Hey, look! It’s still here! It’s not going away
“There’s nothing there,” you say.
For the love of crap, can’t you see? It is!
You look again
Your eyes rest briefly on it
They widen in horrified comprehension
And then they close.
“You’re crazy,” you say to me
You know you are lying
And yet you don’t know that you know
You ignore it
You don’t think of it
You don’t look
You don’t realize
If it were really important, you would have noticed it by now, right?
But you already have
If it were really important, you would remember it, right?
But you do remember
You say that I’m crazy
Take a deep, long look at yourself
If you think this poem isn’t about you