3. Accept that you aren’t perfect. If you are your own worst critic, if you always expect yourself to be perfect, you greatly increase the chances of reacting negatively to someone else’s criticism of you. Smith College professor Randy O. Frost has studied perfectionism for decades, and is convinced that being a perfectionist is the single most effective behavior people have to ruin themselves. The smarter and more successful you are, the better your chances of being a perfectionist. You’ve got to learn to accept your own human frailty and shortcomings. We all do.