Depends on a variety of factors. Though you might want to settle on a profession first. It won't matter how much money it makes if you don't like doing it. Same with setting up a dental practice or a chiropractor practice. Things like location, competition, ability to raise starting capital, and establishing a reliable customer base. If it's done right and all the mentioned factors come together, I understand you can do well enough. I also understand that it's very labor intensive. Not your 8 hours a day and leave work at work type of business.