Navigate goes hand in hand with flying the airplane.
Why?
You have a problem - there is absolutely no doubt that aviate comes first.
In this case chances are your instant reaction is to continue on the chosen course until you have established you have the problem under control and it is not escalating.
What do you do next?
I am simply suggesting that if you are surrounding by CAS, tensions are running a little high etc.. you tell AT you have a problem, declare a pan whatever, and would like to divert to X or the nearest.
All of a sudden the airspace ahead of you is probably clear, you probably dont have to worry if you are about to bust a bit of CAS, you dont have to worry too much about other traffic and you dont have to worry about setting up the GPS or the VOR or the whizz wheel at that instant.
In fact you have a whole lot more time to worry about aviating - the one that is ultimately going to save your life!
You also have a carm head on your side and in your ears - for all you old timers you may well say so what, but if you are new to this game I suspect their are times when that alone is very comforting!