I consciously and successfully did this with Python back when it was hard to find Pyguys. But, it took a killer app (Django use by media companies) to achieve s

I consciously and successfully did this with Python back when it was hard to find Pyguys. But, it took a killer app (Django use by media companies) to achieve self-sustaining demand growth. I also really, really love development in Python. Which probably was 80% reason of my success. tldr; The best success is achieved by doing things you are passionate about. Not chasing jobs/tech/money.