I'm not sure there is much worth in imitating a Roman Emperor. They were violent megalomaniacal psychopaths to a man. There is little, about Marcus as a human being, I would consider "successful". Just because he was a good Emperor doesn't mean he was a morally successful person.

To me, successful "mind hacks" help us become more success at being better people; not enabling a horrible empire.

Of course the final word on Marcus should go to Mary Beard, the best classist of her generation:

--->“I have never understood what people get out of him. It’s a bad book. It’s hard to argue about it — it’s so evidently garbage that it’s hard to sit down with somebody who doesn’t think it’s garbage and fight it out. He’s a terrible writer."