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
To elaborate on MattG's "doing shit differently is hard" hypothesis: implementing most kinds of self-help advice requires permanently adopting new habits, and implementing habit change is hard. We know from habit formation studies that in order to establish a new habit, you need to associate the habit with consistent rewards and triggers, so that each time that you encounter the trigger you carry out the habit, and you should also receive a reward on a fair number of the occasions that you carry out the habit. Furthermore habits can easily fall apart if the triggers aren't robust and flexible enough.
On top of this you have Scott Alexander's "Life Hack Paradox", where those self-help habits that aren't hard become saturated, and simply become the cost of doing business (E.G Goal setting, Caffeine)