A tendency to set rigid high standards of performance for oneself.
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per·fec·tion·ism pər-'fek-shə-.niz-əm n a disposition to regard anything short of perfection as unacceptable esp the setting of unrealistically demanding goals accompanied by a disposition to regard failure to achieve them as unacceptable and a sign of personal worthlessness
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per·fec·tion·ism (pər-fekґshən-iz-əm) the setting for oneself or others of a standard of flawless work or performance, or at least of one that is higher than the situation requires.Medical dictionary. 2011.