Resist Cognitive Decline by Re-Assuming the Practice of Old Skills

I first got onto this "Hacking Your Own Brain" business, because, whereas I used to be able to schmooze with almost anyone, after a certain decline in one of the cognitions, (social, emotional, intellectual and motor skills), I found myself, no longer a sociability master, but silly, to the point of irking others.I never formally studied this topic, how to reverse brain aging. But I have practical experience with it, that you probably can't get in college. (In the 1st comment, "I hacked my own brain, as it were, going through the exercises in "Your Brain, for Dummies".) This brings...