In economics, economists aren't very good at many things. I don't think there's that much practical about the study of economics. The only really practical thing is it discourages you from buying individual stocks. But what about psychology? Does it help you in any way? That's a good question. This is just to pile on an economist a while while I desperately think of an answer.
Do psychologists know anything? Psychologist Paul Bloom says yes--but not the things that you might think. Bloom discusses his book Psych with EconTalk's Russ Roberts and what the field of psychology can teach us about human intelligence, consciousness, and unhelpful instincts. They also discuss just how far psychology is from a true understanding of the human mind, and why, according to Bloom, that might not be such a bad thing.