Culture makes people understand each other better. And if they understand each other better in their soul, it is easier to overcome the economic and political barriers. But first they have to understand that their neighbour is, in the end, just like them, with the same problems, the same questions.
Don't ever criticize yourself. Don't go around all day long thinking, 'I'm unattractive, I'm slow, I'm not as smart as my brother.' God wasn't having a bad day when he made you... If you don't love yourself in the right way, you can't love your neighbour. You can't be as good as you are supposed to be.