This is the fourth of Tim Urban's series on Elon Musk, and this time it's about some reasoning processes that are made explicit, which LW readers should find very familiar. It's a potentially useful explicit model of how to make decisions for yourself.
http://waitbutwhy.com/2015/11/the-cook-and-the-chef-musks-secret-sauce.html
Small nitpick: I think the reason self-help has little effect is that most people don't apply it, not that they apply it and nothing happens.
But why do they not apply it? Either way, the self-help material doesn't wind up helping or harming.
Perhaps it is because most people are not nearly as free as they experience themselves to be. They think that they can learn, that they can know, that they can act, but in reality they mostly struggle with anything larger than choosing from a restaurant menu. They struggle even with no-brainers like not living as a couch potato. Why do we even have a short code for "couch potato"?