I decided to illustrate my inner critic. It is a blindfolded and commercialized soft toy donkey, who has lost his tail. In other words, it really does not know a meaning of a self criticism. Either it is a pessimistic jackass, who does not see any good in anything, or just stubbornly does something without any critic.
And after all, he has just became brainwashed by all the common believes said about donkeys, which are actually very wise and cautious animal, not a stubborn or stupid as people think.
EDIT: And here what it sounds like http://youtu.be/4_yC-Bc5aC0