Yes, I started my first business when I was 7 years old. My brother and I did custom lawn mowing and shrub pruning for several years. Didn't always like it, especially on hot days, but we saved our money and had finances saved to start college.
When I was 28, I went to work for a drywall contractor who specialized in taping and finishing by hand. He was able to offer superior quality. He trained me well, and a year later, I went into business for myself. I have worked at it for over 40 years, supported my family of five kids and helped them with college.
I did enjoy the hard work. It kept me healthy and trim, and I enjoyed an excellent reputation as a craftsman. Now, I work part time - for the exercise and extra money.
Check out my hubs. I have a couple on drywall work.