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Dr. Ellen Hendriksen (Savvy Psychologist) address this issue in her article "How Not to Care What Other People Think". She offers a slew of remedies about how to deal with the opinions of people from considering the source to understanding people are ever changing. A good read for anyone.
http://www.quickanddirtytips.com/health-fitness/mental-health/how-not-to-care-what-other-people-think