How to condition a girl child and a boy child

How to condition a girl child (and a boy child)
1. Take no “no” from a boy child. provide everything so that there is no “no” around the boy child. even if that means snatching from other little child and not sharing with other children.
2. in the same breath do not give the girl child even a feeling that she can get her own space in order to make her not selfish!

I am fuming!

disclaimer: This is not about all the boy children and all the girl children and their parents in the whole wide world. I am sure people can see that. Thanks.