Great movement from the community to show some love to FP. I really like Clojure, and will give Hy a try as well.
FP really forces you to write better code and somehow your thinking starts to change slowly. What I realised is that after I started to write Clojure, I am writing much more functions in Python as well. If you haven't tried yet, give FP some chance.
I just want to note that Lisp does not really imply functional programming. Hy is nothing more then Python with Lisp syntax and the awesomesauce that comes from Lisp as macros and reader macros.
Okay, well at least you can add a proper distinction between variable binding and assignment (let vs. set!) if you have macros, but that doesn't really make it more functional, just better.