Never arriving

I was reading a book by a professional fiction writer. She insists on the need to always keep improving, never stagnating, avoiding the attitude of "I have arrived at my destination, it is time to rest". It is like pursuing perfection without pursuing it. Because perfection is just a ghost: it only exists in our minds. So in our lives we keep moving, we keep improving our craft (yes, I consider research a craft), we never arrive, there is no real destination, just the journey. The only thing that matters is to keep moving.