I am busy doing nothing, I spent most of my earnings to buy time (or more precisely, I work only when I am running out of money)

@Suzanne Buckley That's a very good question. In general, I call "work" all activities that I don't like doing. Nevertheless, not all of them bring money. And then, there are also things that bring money and I do like doing them, so these are usually considered as "work" by the general population but for me it's just fun with benefits. When I am running out of money, I usually need to take some projects that are not that fun, for instance, consulting for a big company. When I do have money, I only pick projects that I really like and in some cases, I am perfectly fine doing this for free. But if your question was about what is my primary source of income, it's helping companies automate data analysis using AI, statistics etc. I provide consulting and prototyping services to companies that need to scale operations connected to big amount of data.