If you can sit quietly after difficult news; if in financial downturns you remain perfectly calm; if you can see your neighbors travel to fantastic places without a twinge of jealousy; if you can happily eat whatever is put on your plate; you can fall asleep after a day of running around without a drink or a pill; if you can always find contentment just where you are: you are probably a dog.
Excellence is about fighting and pursuing something diligently, with a strict and determined approach to doing it right. It's okay if there are flaws in the process - it makes it more interesting.