Perfectionism

“This moral theory starts from an account of the good life, or the intrinsically desirable life. And it characterizes this life in a distinctive way. Certain properties, it says, constitute human nature or are definitive of humanity—they make humans human. The good life, it then says, develops these properties to a high degree or realizes what is central to human nature. Different versions of the theory may disagree about what the relevant properties are and so disagree about the content of the good life. But they share the foundational idea that what is good, ultimately, is the development of human nature.”

It should not be misunderstood that a perfectionist believes one can obtain a "perfect" life or state of living, rather a perfectionist practices stead fast perseverance in obtaining the optimal life or state of living.