I think not so much "the harder I work, the luckier I get" as keep working even if you don't get paid much for a while. Which probably is repeatable and you'll likely make money eventually if you bring value to others.
While I do believe in "the harder I work, the luckier I get" mentality, what you said there about "keep working even if you don't get paid much for a while" is the critical factor. I had to stop comparing what I could pay myself versus my peers and even my own post-MBA salary, as I made significantly less for a few years.