You can't know everything there's far too much tech to keep up with; so everyone's expertise is some kind of local optimum. The question is just how local? i.e. How narrow is the pit that you're in? How filtered are the ideas that you receive?

So looking a bit wider, e.g. "meetups and conferences" if you don't already attend, might help.

Beyond that, look at people working in parallel programming languages - What is the main alternative to the languages that you use daily? And how do the people there do things? In what ways is it better?