Completely feel you... I'm in the completely same situation. My main language in the past three years is generally Java, but I worked in Node.js, actively worki

Completely feel you... I'm in the completely same situation. My main language in the past three years is generally Java, but I worked in Node.js, actively working in Scala (Play, Akka and the bunch) and now I'm taking a bit of Python in a side project. I generally like to work with different databases so switching is not that huge to me, as databases go. But yet I feel left out. I see every day things about Elixir, D, Clojure, all kinds of different databases, front-end stuff coming up (although I'm purely back-end big-data/analytics/database guy), and it's anxious. I also have a soft-spot for IoT stuff. The thing is not helped when reading articles and comments that say you should touch as many paradigms as you can, learning a language each month, reading a book each week and so on. And if you don't you manage your time badly and you sleep too much. I'm not saying I don't invest into myself, I take webinars often and my Kindle is always by my hand, but jeez sometimes it's overwhelming.