I had been working as a web dev (full stack) for some years, so the freelancing gigs I found were mostly web programming. One gig was for my ex-employer, other

I had been working as a web dev (full stack) for some years, so the freelancing gigs I found were mostly web programming. One gig was for my ex-employer, other one was for other company. Of course you need to have some selling skills as well and know some people who need to do business. During that time app stores were a relatively new thing, so the products I was developing were apps. They started making a decent revenue after 2 years if I remember right. The first year I didn't make about any money. I had very low-cost lifestyle, and cheap rent in a tiny apartment, which helped a lot. If I would have kids or some expensive hobbies it would have been much, much more difficult.