I might have come to the terms that this feeling is a combination of mid-life crisis and ”what I would like to do next” influenced by discovering that one company doing pretty much what I would like to do for living. I will use the next year to learn a bunch of new things (specifically artificial intelligence and machine learning), then I will double-check if that company is still running as smoothly as it is now. Then I can make decisions on what to do with my life.