Inferiority complex, according to oxford dictionary is feeling that you are not as good, as important or as intelligent as others.
Most times we feel like we are not as pretty or as good looking as the others and because of that we start feeling down and looking down on ourself, we seperate ourself from the outside world.
When we see a friend, probably looking tall, fair and beautiful and we on the other hand probably we are dark, chubby and short and then you begin to feel that you are not up to standard or you dont fit into their world. There is nothing like their world its just you making them feel they are higher than you are and in most cases they take advantage of it and bagin to treat you the way they want and they begin to look down on you.
You are not inferior to anyone stop having that mindset, everyone is superior in one aspect or the other. Remember no one is perfect, those people that you think are perfect all have one flop or the other but they refuse to allow it affect them. Dont allow your flop weigh you down or make you feel different, you are beautiful the way you are.
When i was growing up as a teenager then, i always feel inferior to my mates, i do feel they are better than i am and prettier, am dark and chubby and most of them are light and thin, i even feel inferior to my elder sister, but growing up i noticed something about me, i was dark, chubby and short but i was endowed than all of them and my complexion was shiny and beautiful since then i killed that feeling and i never regretted that action.
Never let allow yourself feel inferior to anyone, you superior in your own way always remember that.