Smart people say: stop comparing yourself to others.

But no matter what heights of awareness we have reached, willingly or unwillingly, consciously or subconsciously, we still compare ourselves to others. That's because behind it is an evolutionary mechanism that ensures our survival. It is not a "why" question that really matters but "what we have as a result" of such a comparison. Well, as a result, we have different feelings, most commonly - envy.