There is a lot of talk here about sophisticated rationality failures - priming, overconfidence, etc. etc. There is much less talk about what I think is the more common reason for people failing to act rationally in the real world - something that I think most people outside this community would agree is the most common rationality failure mode - acting emotionally (pjeby has just begun to discuss this, but I don't think it's the main thrust of his post...).
While there can be sound evolutionary reasons for having emotions (the thirst for revenge as a Doomsday Machine being the easiest to understand), and while we certainly don't want to succumb to the fallacy that rationalists are emotionless Spock-clones. I think overcoming (or at least being able to control) emotions would, for most people, be a more important first step to acting rationally than overcoming biases.
If I could avoid saying things I'll regret later when angry, avoid putting down colleagues through jealousy, avoid procrastinating because of laziness and avoid refusing to make correct decisions because of fear, I think this would do a lot more to make me into a winner than if I could figure out how to correctly calibrate my beliefs about trivia questions, or even get rid of my unwanted Implicit Associations.
So the question - do we have good techniques for preventing our emotions from making bad decisions for us? Something as simple as "count to ten before you say anything when angry" is useful if it works. Something as sophisticated as "become a Zen Master" is probably unattainable, but might at least point us in the right direction - and then there's everything in between.
I'm afraid I'm repeating myself when I say this, but there is already a school of rationalism that discusses exactly this question, and it's called cognitive behavioural therapy, or CBT. As far as I can tell, CBT is exactly the process of using our capacity for rational introspection to improve our mental health, and it is the most empirically effective talking therapy there is.
ok, that's great. It sounds like 'something in the middle'..., so what should I do? I don't have any diagnosable pyschological illness, or even any problems a psychiatrist would be interested in, but I do sometimes have emotional reactions that I'd like to control.
Is CBT aimed specifically at helping people with pschological conditions? Or does it have useful elements that perfectly healthy people can use to help them get over perfeclty normal problems? And how can I find out about them?