You know Marcus Aurelius was emperor of Rome right? It's not startup founder successful, but it's definitely moderately successful.
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."