1) Transfer your overall web development skills to another language/platform (Go, Clojure, Elixir or JS/Node). For anyone 'spoilt' by the beauty of Ruby, Clojure and Elixir are good choices. Given that you are coding professionally since 2008, you should be able to move into 'adept' category quickly in any of the above.

2) Utilize your Ruby programming expertise and become a Mobile developer !! Check out Rubymotion.com. Code in Ruby for Android and iOS.