I'm not an Entrepreneur, but I will probably become fairly well-off, slowly by following the Bogleheads strategy.
Which is?
Here[1], you can learn about it. It's simple, but not easy.
For me, it means buying Fidelity 0 funds in a Roth IRA and not selling them.
[1]https://www.bogleheads.org/wiki/Bogleheads%C2%AE_investment_...
Autoinvest diversely and don't sell. Minimize transactions. Never invest based on the news.