LW has a problem. Openly or covertly, many posts here promote the idea that a rational person ought to be able to self-improve on their own. Some of it comes from Eliezer's refusal to attend college (and Luke dropping out of his bachelors, etc). Some of it comes from our concept of rationality, that all agents can be approximated as perfect utility maximizers with a bunch of nonessential bugs. Some of it is due to our psychological makeup and introversion. Some of it comes from trying to tackle hard problems that aren't well understood anywhere else. And some of it is just the plain old meme of heroism and forging your own way.
Hahahaha, this is so funny. You've never attended a seriously challenging class your entire life, I take it? There are a lot of topics/subjects that there's no feasible way to learn successfully, other than banging your head against them over and over until they finally sink in. This is painful in a quite literal way, and doing it with any real consistency calls for willpower and anti-akrasia techniques.
And yes, joining a class may even be suboptimal compared to just learning some thing like that on your own. A class is one-size-fits-all; they'll fully expect you to 'grok' something on the first try, and then just move on to some other thing. If your willpower is strong enough to keep up with that pace you can do fine, otherwise you'll just get left in the dust. This is hardly a solution to willpower problems!
Got my masters in math with honors somehow...
That said, I believe that moderate effort leads to fastest learning, and nothing is inherently hard to learn but lots of things are poorly taught. In fields with a strong genius myth, like math or physics, that turns into a macho attitude which stops people from even trying to teach well. Other fields got over it, for example a Betty Edwards style drawing class leads to almost guaranteed improvement for... (read more)