For me, it was getting into IT when I was 30 (4 years ago) and for the first time in my life, I loved my work. I did not do it when I was 20, when was deeply into programming. Instead, I feared math in computer science studies, which led me to work as a car salesman (one that read HN all the time). When I was really broke and unhappy, I met a guy who introduced me into IT contracting for big companies. I just did what he said and instantly landed a long term gig that quadrupled my income. This, in return, made me read, read, read to learn as much as possible. Besides work, I now do Computer Science courses at university. Boy, had I known I could do all this, I would have started a decade sooner...