Once in a while, its good to put up some challenge for yourself, constraining you to mind your shoot more consciously. For mine, it will be something I have been conditioning myself to do - use the Nikkor 50mm exclusively in my upcoming trip to the Philippines. This is also partly due to the luggage space I am planning to take with me.
In my last trip on the cruise, I succumb to using my Nikkor 18-105mm lens at the end when I board the ship as its seriously limited to shoot indoor with the 50mm lens. Hopefully, I will be forced to improve my fundamentals in this way.