May be someone had a brother who was given preference over. These small incidents when we are young could be disturbing and leave us with complexes. However, when we grow up we should try to rationalize and forgive. This forgiving is for our own good and unless we forgive we are not able to heal from within and thus get out of complexes. This healing is important for us to have a higher self-esteem.
Foremost thing is the high self-esteem.
God created us all unique. Everyone is here for a purpose and we women have no reason to feel less than anyone. There are some people who are more fortunate. This fact should not make us feel less fortunate. I think when someone tries to put us down or looks down upon us, it is written on our face that okay they can do it.