[Question] Best empirical evidence on better than SP500 investment returns?

I am not smart enough to be a real rationalist, and I am really lazy. But I am smart enough to understand and implement rationalist advice and I suspect y’all are a better source of advice than normal investors. What is the highest level of returns I can achieve with a buy and hold strategy of some kind, across any asset class, and what is the empirical evidence for this? Also, I am self-employed, in a field where the 99th percentile earners make 7 figures per year and I make only low six figures. So how should I assess investment in an asset vs trying to invest in my career? I am not quite risk-neutral but pretty close to it. My expenses are well below my income; I’m done saving for retirement; further investing is just a game at this point. But I don’t know how to play it.