I am there with you.
Try reading Art Costa's (and co-author) HABITS OF MIND. He will teach anyone - young or old - how to learn more effectively. In fact, some research done recently identified four of the sixteen habits that he identified as the strongest indicators of success in college.
One example - persistence. We tell children to persist - do not give up - you can do it if you decide to - but we don't teach them HOW to persist! And we can. And we should. It would be a much more worthwhile lesson than how to square a binomial.