Your business is more than finance. Your business is a combination of things.
Running your own business can be fun, or it can be painful. If you understand that Revenue minus Cost of Goods Sold equals your Gross Profit (some people call this Gross Margin), that is a good start. From that gross profit, you must pay your other employees, your rent, utilities, taxes, insurance, etc. Then, by the way, you must pay yourself and have money left over to set aside for reinvestment in your business or those times when your revenue isn’t where you want or need it to be AND MAKE A PROFIT.