When I started out back in 2012 at the age of 31, a bunch of my older experienced developer friends told me to just focus on JavaScript, and that JavaScript was the future. Well, I didn't listen to them. Instead I geeked out over tools.
I started using Python. Then I worked as a Ruby on Rails developer. And finally I came back to learning JavaScript, and that's when I realized that those experienced developer friends were right.
I've written more about this here: medium.freecodecamp.com/a-cautionary-tale-of-lear…