I think many of us have grown up with the thought that our brains were somewhat static and that our level of intelligence would not change. Isn't that why we did all those IQ tests when we were younger, to indicate our aptitude for success?
We now know that our brains are constantly creating new connections and that, with diligence and persistence, pretty much anything can be learned. Teaching youth today (and some of us not so young), that they can learn techniques to help them learn better, will benefit them in many ways. Most importantly, comprehending that "failing" isn't failure at all, but rather developing mastery on many different levels by seeking out more and more knowledge with which new connections develop throughout many cognitive domains.