It has all the elements to make it popular. The image of a strong and resilient sage and the implied idea that you can transform into such a being if you just f

It has all the elements to make it popular. The image of a strong and resilient sage and the implied idea that you can transform into such a being if you just follow the instructions. The gravitas from its association with the Ancients and books with cool titles penned by badass sounding people (most notably Marcus Aurelius). The appearance of having discovered a "life hack" based on rational thought. The fact that it can be neatly packaged into the modern day American self-help culture we are familiar with (LinkedIn "influencers", Tim Ferris-type books, self-affirmation, etc.)