No one can make you feel inferior without your consent. (Eleanor Roosevelt, 20th century U.S. First Lady)
Certain people seem to have an inferiority complex. They feel insignificant in a group, thinking everyone else is smarter, better educated, or successful. That may be a common problem for some, but Roosevelt is encouraging those people to take a positive look at their lives, realizing that they should avoid comparisons and think clearly about their own strengths.
Pay careful attention to your own work, for then you will get the satisfaction of a job well done, and you won’t need to compare yourself to anyone else (Galatians 6:4).