$48k gross is too low. A full time solo operator should be shooting for $70k-$100k+, depending on their market and living expenses. After taxes, health insurance, and general business expenses, you can plan on keeping around 60%.
As @Wagonhound mentioned, don’t focus on the number of jobs so much as the profitability of the work you’re doing. Your time is finite. Figure out what gets you the most return for your time. You don’t have the leverage of “other people’s time” like bigger companies, so you have to leverage other aspects, such as your efficiency, labor saving equipment, and higher $ services.