You usually start a business to fill a need for the service you are providing. This entails doing some research and a small business plan to show that you can survive on the cash coming through the business. If you have not done this and simply started on a whim then you could be doomed to being one of the well in excess of 50% that go under in the first 12 months?
There are only 4 and a 1/2 rules of business:
1 Pay nothing for your inputs
2 Do nothing to them
3 Sell them for as much as possible while undercuting your competitor to put them out of business
4 Recover your money from your customer before you pay for your inputs
4 1/2 Exploit your family first
If you get anywhere close to these you will prosper.