The Human Hierarchy
Human society, like the society of other related primates is built upon a hierarchy. Our status within it tells us everything we need to know about ourselves and our relationship with others.
A homeless person in the street is below you, and the prime minister or the queen is above you. I am below you, but above a homeless person in the street. A ex-criminal recenty released from prison is above a homeless person in the street, but below me, you and the prime minister. Most of the time we compete with our friends who are usually peers among the hierarchy. We often think of ourselves as above them while being aware that they are thinking of themselves as above us.
I hope that my illustration of the system indicates its stupidity because people, like hamsters or any members of a species, are really just the same. You should recognise that the hierarchy is part of our genes, the design of the human species, and all people feel it even if it opposes logic. Feelings of inadequacy come only from our perception of ourselves within the hierarchy. Those people who consider themselves below someone else feel unhappy because they feel inadequate.