If anyone should be able to sell self-help books in the AI era, it’s Tim Ferriss. And apparently even he’s struggling. Since releasing his blockbuster bestseller The 4-Hour Work Week in 2007, Tim Ferriss has sold millions of copies of his books and become a top, all-purpose self-help guru along the way. He dispenses advice on YouTube, sits for high-profile interviews, and helms an interview podcast that’s been downloaded more than a billion times.