God created everyone equally.
Hard work is the easiest way to success.
No one is more capable than you.
Sky's the limit.

Why do we say these things to children? We know they're extremely inaccurate. Some people are blessed with a much higher IQ than the rest. Of course they're far more capable than us. Some come from backgrounds that favour their progress in every way. Some have reserved seats which no one can pull away from them. Some have more facilities than the rest.
And a lucky few have all of them together.
And yet, we tell ourselves, "Everyone is equal, only hard work sets us apart."
What does this create apart from self-loathing and a sense of failure in those who don't get what they aim for?
There are countless obstacles to get where we need, and many of them are steadfast in their position. They cannot be budged by a person of your capabilities.
There are hormonal influences, health problems, social obligations, familial constraints, social and economic limitations, and mental health issues which can effectively pull us back. Each person is built differently, and that doesn't give anyone the right to a superiority complex. Nobody has the right to laugh at someone with two backlogs because probably nobody knows what situations she's struggling to battle.
Not every person has the same internal and external strife, not even in the same intensity and frequency. Not everything​ in life is your fault.