The way you need to look at it is in terms of: if I had twice the business and had to hire someone, am I making enough money that I could pay them to do exactly the same thing I am doing? And would I be able to buy the equipment they would need to do the work? If the answer is no, then you cannot do the work that cheap even if it's just you and you're willing to not pay yourself minimum wage or whatever you'd have to pay to be able to keep an employee who is as capable as you.