I great man once said, the man who demands equality, sees
himself as lesser than equal of other men.
Moral of it is, life is not meant to be fair. Life would be so dull
if we are all equals in physical attributes, aptitude, etc..
Like it or not, not all of us start off in life on equal footing,
but we cant change the circumstances of our birth. Dont fret about
things we have no control over.
Be that as it may, neither should we accept the limitations that
birth and circumstances impose on us.
What you should focus on are, the things you have influence over,
like diligence, commitment, resolve, strength of character, etc. In
my line of work I have the good fortune of working with some very
successful people, more often then not the common denominator is
always the strength of character, you cannot be truly successful
without overcoming adversity.