I clean roofs for a living. The work was never the problem. The problem was everything around it: missed calls while I was up a ladder, quotes typed out at nine at night, and customers who loved the job and were never asked for a review.
So I built a system to do those jobs for me. It answers, quotes, chases, books and asks, in my words and on my rules. My carpet cleaning business runs on it too.
The first business to pay for it was an exterior cleaner whose ads were not turning into jobs. A few free pointers later, he asked me to run it properly. That is how 77Labs started.