I met couple of them: Soldier in the navy, served enough to fully retired. While being on retirement he learned HTML, CSS, PHP (around 2000s) and he is contrac

I met couple of them: Soldier in the navy, served enough to fully retired. While being on retirement he learned HTML, CSS, PHP (around 2000s) and he is contractor to this day. Manager in warehouse. He was working there for 5+ years starting as the lowest paid employee (some other physical jobs before that), decided to start coding. He learned front end dev in 2 years on online courses and landed his first dev job just before he turned 30.