Your small business is your best bet at getting wealthy, so long as it is turning a profit. If you can start, grow and sell businesses you can become wealthy.
Another way is to buy houses in need of some repair below cost, living in them while fixing them, then selling them at a profit. Since you are young and single this is more feasible than if you had a family. Do this three-four times successfully over a few years and you can buy your own house for cash. Then buy and manage rental properties, if you have the skills to do so.
Supposedly the above two ways are the most certain to get you rich should that be your goal. Even if you fail a few times so long as doing so doesn't leave you in debt it only takes once to win.